diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 07ec5023d5..0628e7fd52 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -16214,7 +16214,7 @@ namespace ts {
                             return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, text, "async");
                         }
                         else if (node.parent.kind === SyntaxKind.ModuleBlock || node.parent.kind === SyntaxKind.SourceFile) {
-                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_module_element, text);
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_module_or_namespace_element, text);
                         }
                         else if (flags & NodeFlags.Abstract) {
                             if (modifier.kind === SyntaxKind.PrivateKeyword) {
@@ -16238,7 +16238,7 @@ namespace ts {
                             return grammarErrorOnNode(modifier, Diagnostics._0_modifier_must_precede_1_modifier, "static", "async");
                         }
                         else if (node.parent.kind === SyntaxKind.ModuleBlock || node.parent.kind === SyntaxKind.SourceFile) {
-                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_module_element, "static");
+                            return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_module_or_namespace_element, "static");
                         }
                         else if (node.kind === SyntaxKind.Parameter) {
                             return grammarErrorOnNode(modifier, Diagnostics._0_modifier_cannot_appear_on_a_parameter, "static");
diff --git a/src/compiler/diagnosticMessages.json b/src/compiler/diagnosticMessages.json
index 93872e35aa..b8ae833e5a 100644
--- a/src/compiler/diagnosticMessages.json
+++ b/src/compiler/diagnosticMessages.json
@@ -123,7 +123,7 @@
         "category": "Error",
         "code": 1043
     },
-    "'{0}' modifier cannot appear on a module element.": {
+    "'{0}' modifier cannot appear on a module or namespace element.": {
         "category": "Error",
         "code": 1044
     },
diff --git a/tests/baselines/reference/Protected1.errors.txt b/tests/baselines/reference/Protected1.errors.txt
index 561e4cfd00..157c9b3263 100644
--- a/tests/baselines/reference/Protected1.errors.txt
+++ b/tests/baselines/reference/Protected1.errors.txt
@@ -1,8 +1,8 @@
-tests/cases/conformance/parser/ecmascript5/Protected/Protected1.ts(1,1): error TS1044: 'protected' modifier cannot appear on a module element.
+tests/cases/conformance/parser/ecmascript5/Protected/Protected1.ts(1,1): error TS1044: 'protected' modifier cannot appear on a module or namespace element.
 
 
 ==== tests/cases/conformance/parser/ecmascript5/Protected/Protected1.ts (1 errors) ====
     protected class C {
     ~~~~~~~~~
-!!! error TS1044: 'protected' modifier cannot appear on a module element.
+!!! error TS1044: 'protected' modifier cannot appear on a module or namespace element.
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/Protected2.errors.txt b/tests/baselines/reference/Protected2.errors.txt
index 0f6de4d49e..7779cb5534 100644
--- a/tests/baselines/reference/Protected2.errors.txt
+++ b/tests/baselines/reference/Protected2.errors.txt
@@ -1,8 +1,8 @@
-tests/cases/conformance/parser/ecmascript5/Protected/Protected2.ts(1,1): error TS1044: 'protected' modifier cannot appear on a module element.
+tests/cases/conformance/parser/ecmascript5/Protected/Protected2.ts(1,1): error TS1044: 'protected' modifier cannot appear on a module or namespace element.
 
 
 ==== tests/cases/conformance/parser/ecmascript5/Protected/Protected2.ts (1 errors) ====
     protected module M {
     ~~~~~~~~~
-!!! error TS1044: 'protected' modifier cannot appear on a module element.
+!!! error TS1044: 'protected' modifier cannot appear on a module or namespace element.
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/importDeclWithClassModifiers.errors.txt b/tests/baselines/reference/importDeclWithClassModifiers.errors.txt
index b7f60881e6..586eac79b1 100644
--- a/tests/baselines/reference/importDeclWithClassModifiers.errors.txt
+++ b/tests/baselines/reference/importDeclWithClassModifiers.errors.txt
@@ -1,8 +1,8 @@
-tests/cases/compiler/importDeclWithClassModifiers.ts(5,8): error TS1044: 'public' modifier cannot appear on a module element.
+tests/cases/compiler/importDeclWithClassModifiers.ts(5,8): error TS1044: 'public' modifier cannot appear on a module or namespace element.
 tests/cases/compiler/importDeclWithClassModifiers.ts(5,28): error TS2305: Module 'x' has no exported member 'c'.
-tests/cases/compiler/importDeclWithClassModifiers.ts(6,8): error TS1044: 'private' modifier cannot appear on a module element.
+tests/cases/compiler/importDeclWithClassModifiers.ts(6,8): error TS1044: 'private' modifier cannot appear on a module or namespace element.
 tests/cases/compiler/importDeclWithClassModifiers.ts(6,29): error TS2305: Module 'x' has no exported member 'c'.
-tests/cases/compiler/importDeclWithClassModifiers.ts(7,8): error TS1044: 'static' modifier cannot appear on a module element.
+tests/cases/compiler/importDeclWithClassModifiers.ts(7,8): error TS1044: 'static' modifier cannot appear on a module or namespace element.
 tests/cases/compiler/importDeclWithClassModifiers.ts(7,28): error TS2305: Module 'x' has no exported member 'c'.
 
 
@@ -13,17 +13,17 @@ tests/cases/compiler/importDeclWithClassModifiers.ts(7,28): error TS2305: Module
     }
     export public import a = x.c;
            ~~~~~~
-!!! error TS1044: 'public' modifier cannot appear on a module element.
+!!! error TS1044: 'public' modifier cannot appear on a module or namespace element.
                                ~
 !!! error TS2305: Module 'x' has no exported member 'c'.
     export private import b = x.c;
            ~~~~~~~
-!!! error TS1044: 'private' modifier cannot appear on a module element.
+!!! error TS1044: 'private' modifier cannot appear on a module or namespace element.
                                 ~
 !!! error TS2305: Module 'x' has no exported member 'c'.
     export static import c = x.c;
            ~~~~~~
-!!! error TS1044: 'static' modifier cannot appear on a module element.
+!!! error TS1044: 'static' modifier cannot appear on a module or namespace element.
                                ~
 !!! error TS2305: Module 'x' has no exported member 'c'.
     var b: a;
diff --git a/tests/baselines/reference/invalidModuleWithStatementsOfEveryKind.errors.txt b/tests/baselines/reference/invalidModuleWithStatementsOfEveryKind.errors.txt
index 101ee0124c..797f3b1fe9 100644
--- a/tests/baselines/reference/invalidModuleWithStatementsOfEveryKind.errors.txt
+++ b/tests/baselines/reference/invalidModuleWithStatementsOfEveryKind.errors.txt
@@ -1,24 +1,24 @@
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(4,5): error TS1044: 'public' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(6,5): error TS1044: 'public' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(12,5): error TS1044: 'public' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(13,5): error TS1044: 'public' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(15,5): error TS1044: 'public' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(19,5): error TS1044: 'public' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(25,5): error TS1044: 'public' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(29,5): error TS1044: 'private' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(31,5): error TS1044: 'private' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(37,5): error TS1044: 'private' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(38,5): error TS1044: 'private' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(40,5): error TS1044: 'private' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(44,5): error TS1044: 'private' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(50,5): error TS1044: 'private' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(55,5): error TS1044: 'static' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(57,5): error TS1044: 'static' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(63,5): error TS1044: 'static' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(64,5): error TS1044: 'static' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(66,5): error TS1044: 'static' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(70,5): error TS1044: 'static' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(76,5): error TS1044: 'static' modifier cannot appear on a module element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(4,5): error TS1044: 'public' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(6,5): error TS1044: 'public' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(12,5): error TS1044: 'public' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(13,5): error TS1044: 'public' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(15,5): error TS1044: 'public' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(19,5): error TS1044: 'public' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(25,5): error TS1044: 'public' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(29,5): error TS1044: 'private' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(31,5): error TS1044: 'private' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(37,5): error TS1044: 'private' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(38,5): error TS1044: 'private' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(40,5): error TS1044: 'private' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(44,5): error TS1044: 'private' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(50,5): error TS1044: 'private' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(55,5): error TS1044: 'static' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(57,5): error TS1044: 'static' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(63,5): error TS1044: 'static' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(64,5): error TS1044: 'static' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(66,5): error TS1044: 'static' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(70,5): error TS1044: 'static' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts(76,5): error TS1044: 'static' modifier cannot appear on a module or namespace element.
 
 
 ==== tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts (21 errors) ====
@@ -27,11 +27,11 @@ tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOf
     module Y {
         public class A { s: string }
         ~~~~~~
-!!! error TS1044: 'public' modifier cannot appear on a module element.
+!!! error TS1044: 'public' modifier cannot appear on a module or namespace element.
     
         public class BB<T> extends A {
         ~~~~~~
-!!! error TS1044: 'public' modifier cannot appear on a module element.
+!!! error TS1044: 'public' modifier cannot appear on a module or namespace element.
             id: number;
         }
     }
@@ -39,20 +39,20 @@ tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOf
     module Y2 {
         public class AA<T> { s: T }
         ~~~~~~
-!!! error TS1044: 'public' modifier cannot appear on a module element.
+!!! error TS1044: 'public' modifier cannot appear on a module or namespace element.
         public interface I { id: number }
         ~~~~~~
-!!! error TS1044: 'public' modifier cannot appear on a module element.
+!!! error TS1044: 'public' modifier cannot appear on a module or namespace element.
     
         public class B extends AA<string> implements I { id: number }
         ~~~~~~
-!!! error TS1044: 'public' modifier cannot appear on a module element.
+!!! error TS1044: 'public' modifier cannot appear on a module or namespace element.
     }
     
     module Y3 {
         public module Module {
         ~~~~~~
-!!! error TS1044: 'public' modifier cannot appear on a module element.
+!!! error TS1044: 'public' modifier cannot appear on a module or namespace element.
             class A { s: string }
         }
     }
@@ -60,17 +60,17 @@ tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOf
     module Y4 {
         public enum Color { Blue, Red }
         ~~~~~~
-!!! error TS1044: 'public' modifier cannot appear on a module element.
+!!! error TS1044: 'public' modifier cannot appear on a module or namespace element.
     }
     
     module YY {
         private class A { s: string }
         ~~~~~~~
-!!! error TS1044: 'private' modifier cannot appear on a module element.
+!!! error TS1044: 'private' modifier cannot appear on a module or namespace element.
     
         private class BB<T> extends A {
         ~~~~~~~
-!!! error TS1044: 'private' modifier cannot appear on a module element.
+!!! error TS1044: 'private' modifier cannot appear on a module or namespace element.
             id: number;
         }
     }
@@ -78,20 +78,20 @@ tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOf
     module YY2 {
         private class AA<T> { s: T }
         ~~~~~~~
-!!! error TS1044: 'private' modifier cannot appear on a module element.
+!!! error TS1044: 'private' modifier cannot appear on a module or namespace element.
         private interface I { id: number }
         ~~~~~~~
-!!! error TS1044: 'private' modifier cannot appear on a module element.
+!!! error TS1044: 'private' modifier cannot appear on a module or namespace element.
     
         private class B extends AA<string> implements I { id: number }
         ~~~~~~~
-!!! error TS1044: 'private' modifier cannot appear on a module element.
+!!! error TS1044: 'private' modifier cannot appear on a module or namespace element.
     }
     
     module YY3 {
         private module Module {
         ~~~~~~~
-!!! error TS1044: 'private' modifier cannot appear on a module element.
+!!! error TS1044: 'private' modifier cannot appear on a module or namespace element.
             class A { s: string }
         }
     }
@@ -99,18 +99,18 @@ tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOf
     module YY4 {
         private enum Color { Blue, Red }
         ~~~~~~~
-!!! error TS1044: 'private' modifier cannot appear on a module element.
+!!! error TS1044: 'private' modifier cannot appear on a module or namespace element.
     }
     
     
     module YYY {
         static class A { s: string }
         ~~~~~~
-!!! error TS1044: 'static' modifier cannot appear on a module element.
+!!! error TS1044: 'static' modifier cannot appear on a module or namespace element.
     
         static class BB<T> extends A {
         ~~~~~~
-!!! error TS1044: 'static' modifier cannot appear on a module element.
+!!! error TS1044: 'static' modifier cannot appear on a module or namespace element.
             id: number;
         }
     }
@@ -118,20 +118,20 @@ tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOf
     module YYY2 {
         static class AA<T> { s: T }
         ~~~~~~
-!!! error TS1044: 'static' modifier cannot appear on a module element.
+!!! error TS1044: 'static' modifier cannot appear on a module or namespace element.
         static interface I { id: number }
         ~~~~~~
-!!! error TS1044: 'static' modifier cannot appear on a module element.
+!!! error TS1044: 'static' modifier cannot appear on a module or namespace element.
     
         static class B extends AA<string> implements I { id: number }
         ~~~~~~
-!!! error TS1044: 'static' modifier cannot appear on a module element.
+!!! error TS1044: 'static' modifier cannot appear on a module or namespace element.
     }
     
     module YYY3 {
         static module Module {
         ~~~~~~
-!!! error TS1044: 'static' modifier cannot appear on a module element.
+!!! error TS1044: 'static' modifier cannot appear on a module or namespace element.
             class A { s: string }
         }
     }
@@ -139,6 +139,6 @@ tests/cases/conformance/internalModules/moduleBody/invalidModuleWithStatementsOf
     module YYY4 {
         static enum Color { Blue, Red }
         ~~~~~~
-!!! error TS1044: 'static' modifier cannot appear on a module element.
+!!! error TS1044: 'static' modifier cannot appear on a module or namespace element.
     }
     
\ No newline at end of file
diff --git a/tests/baselines/reference/invalidModuleWithVarStatements.errors.txt b/tests/baselines/reference/invalidModuleWithVarStatements.errors.txt
index ad8d457670..347e558edd 100644
--- a/tests/baselines/reference/invalidModuleWithVarStatements.errors.txt
+++ b/tests/baselines/reference/invalidModuleWithVarStatements.errors.txt
@@ -1,9 +1,9 @@
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatements.ts(4,5): error TS1044: 'public' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatements.ts(8,5): error TS1044: 'public' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatements.ts(12,5): error TS1044: 'static' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatements.ts(16,5): error TS1044: 'static' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatements.ts(20,5): error TS1044: 'private' modifier cannot appear on a module element.
-tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatements.ts(25,5): error TS1044: 'private' modifier cannot appear on a module element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatements.ts(4,5): error TS1044: 'public' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatements.ts(8,5): error TS1044: 'public' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatements.ts(12,5): error TS1044: 'static' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatements.ts(16,5): error TS1044: 'static' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatements.ts(20,5): error TS1044: 'private' modifier cannot appear on a module or namespace element.
+tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatements.ts(25,5): error TS1044: 'private' modifier cannot appear on a module or namespace element.
 
 
 ==== tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatements.ts (6 errors) ====
@@ -12,37 +12,37 @@ tests/cases/conformance/internalModules/moduleBody/invalidModuleWithVarStatement
     module Y {
         public var x: number = 0;
         ~~~~~~
-!!! error TS1044: 'public' modifier cannot appear on a module element.
+!!! error TS1044: 'public' modifier cannot appear on a module or namespace element.
     }
     
     module Y2 {
         public function fn(x: string) { }
         ~~~~~~
-!!! error TS1044: 'public' modifier cannot appear on a module element.
+!!! error TS1044: 'public' modifier cannot appear on a module or namespace element.
     }
     
     module Y4 {
         static var x: number = 0;
         ~~~~~~
-!!! error TS1044: 'static' modifier cannot appear on a module element.
+!!! error TS1044: 'static' modifier cannot appear on a module or namespace element.
     }
     
     module YY {
         static function fn(x: string) { }
         ~~~~~~
-!!! error TS1044: 'static' modifier cannot appear on a module element.
+!!! error TS1044: 'static' modifier cannot appear on a module or namespace element.
     }
     
     module YY2 {
         private var x: number = 0;
         ~~~~~~~
-!!! error TS1044: 'private' modifier cannot appear on a module element.
+!!! error TS1044: 'private' modifier cannot appear on a module or namespace element.
     }
     
     
     module YY3 {
         private function fn(x: string) { }
         ~~~~~~~
-!!! error TS1044: 'private' modifier cannot appear on a module element.
+!!! error TS1044: 'private' modifier cannot appear on a module or namespace element.
     }
     
\ No newline at end of file
diff --git a/tests/baselines/reference/parserInterfaceDeclaration3.errors.txt b/tests/baselines/reference/parserInterfaceDeclaration3.errors.txt
index 8e84ca940a..f074a38bd7 100644
--- a/tests/baselines/reference/parserInterfaceDeclaration3.errors.txt
+++ b/tests/baselines/reference/parserInterfaceDeclaration3.errors.txt
@@ -1,8 +1,8 @@
-tests/cases/conformance/parser/ecmascript5/InterfaceDeclarations/parserInterfaceDeclaration3.ts(1,1): error TS1044: 'public' modifier cannot appear on a module element.
+tests/cases/conformance/parser/ecmascript5/InterfaceDeclarations/parserInterfaceDeclaration3.ts(1,1): error TS1044: 'public' modifier cannot appear on a module or namespace element.
 
 
 ==== tests/cases/conformance/parser/ecmascript5/InterfaceDeclarations/parserInterfaceDeclaration3.ts (1 errors) ====
     public interface I {
     ~~~~~~
-!!! error TS1044: 'public' modifier cannot appear on a module element.
+!!! error TS1044: 'public' modifier cannot appear on a module or namespace element.
     }
\ No newline at end of file
diff --git a/tests/baselines/reference/parserInterfaceDeclaration4.errors.txt b/tests/baselines/reference/parserInterfaceDeclaration4.errors.txt
index 97a691a523..aa1fe1aa6e 100644
--- a/tests/baselines/reference/parserInterfaceDeclaration4.errors.txt
+++ b/tests/baselines/reference/parserInterfaceDeclaration4.errors.txt
@@ -1,8 +1,8 @@
-tests/cases/conformance/parser/ecmascript5/InterfaceDeclarations/parserInterfaceDeclaration4.ts(1,1): error TS1044: 'static' modifier cannot appear on a module element.
+tests/cases/conformance/parser/ecmascript5/InterfaceDeclarations/parserInterfaceDeclaration4.ts(1,1): error TS1044: 'static' modifier cannot appear on a module or namespace element.
 
 
 ==== tests/cases/conformance/parser/ecmascript5/InterfaceDeclarations/parserInterfaceDeclaration4.ts (1 errors) ====
     static interface I {
     ~~~~~~
-!!! error TS1044: 'static' modifier cannot appear on a module element.
+!!! error TS1044: 'static' modifier cannot appear on a module or namespace element.
     }
\ No newline at end of file