diff --git a/tests/baselines/reference/enumAssignmentCompat3.errors.txt b/tests/baselines/reference/enumAssignmentCompat3.errors.txt
index d82a4b7d49..b9ab92adec 100644
--- a/tests/baselines/reference/enumAssignmentCompat3.errors.txt
+++ b/tests/baselines/reference/enumAssignmentCompat3.errors.txt
@@ -1,16 +1,18 @@
-tests/cases/compiler/enumAssignmentCompat3.ts(37,1): error TS2322: Type 'Abcd.E' is not assignable to type 'First.E'.
+tests/cases/compiler/enumAssignmentCompat3.ts(49,1): error TS2322: Type 'Abcd.E' is not assignable to type 'First.E'.
   Property 'd' is missing in type 'First.E'.
-tests/cases/compiler/enumAssignmentCompat3.ts(39,1): error TS2322: Type 'Cd.E' is not assignable to type 'First.E'.
+tests/cases/compiler/enumAssignmentCompat3.ts(51,1): error TS2322: Type 'Cd.E' is not assignable to type 'First.E'.
   Property 'd' is missing in type 'First.E'.
-tests/cases/compiler/enumAssignmentCompat3.ts(40,1): error TS2322: Type 'Nope' is not assignable to type 'E'.
-tests/cases/compiler/enumAssignmentCompat3.ts(43,1): error TS2322: Type 'First.E' is not assignable to type 'Ab.E'.
+tests/cases/compiler/enumAssignmentCompat3.ts(52,1): error TS2322: Type 'Nope' is not assignable to type 'E'.
+tests/cases/compiler/enumAssignmentCompat3.ts(56,1): error TS2322: Type 'First.E' is not assignable to type 'Ab.E'.
   Property 'c' is missing in type 'Ab.E'.
-tests/cases/compiler/enumAssignmentCompat3.ts(44,1): error TS2322: Type 'First.E' is not assignable to type 'Cd.E'.
+tests/cases/compiler/enumAssignmentCompat3.ts(57,1): error TS2322: Type 'First.E' is not assignable to type 'Cd.E'.
   Property 'a' is missing in type 'Cd.E'.
-tests/cases/compiler/enumAssignmentCompat3.ts(45,1): error TS2322: Type 'E' is not assignable to type 'Nope'.
+tests/cases/compiler/enumAssignmentCompat3.ts(58,1): error TS2322: Type 'E' is not assignable to type 'Nope'.
+tests/cases/compiler/enumAssignmentCompat3.ts(62,1): error TS2322: Type 'Const.E' is not assignable to type 'First.E'.
+tests/cases/compiler/enumAssignmentCompat3.ts(63,1): error TS2322: Type 'First.E' is not assignable to type 'Const.E'.
 
 
-==== tests/cases/compiler/enumAssignmentCompat3.ts (6 errors) ====
+==== tests/cases/compiler/enumAssignmentCompat3.ts (8 errors) ====
     namespace First {
         export enum E {
             a, b, c,
@@ -39,6 +41,16 @@ tests/cases/compiler/enumAssignmentCompat3.ts(45,1): error TS2322: Type 'E' is n
             c, d,
         }
     }
+    namespace Const {
+        export const enum E {
+            a, b, c,
+        }
+    }
+    namespace Decl {
+        export declare enum E {
+            a, b, c = 3,
+        }
+    }
     
     var abc: First.E;
     var secondAbc: Abc.E;
@@ -46,6 +58,8 @@ tests/cases/compiler/enumAssignmentCompat3.ts(45,1): error TS2322: Type 'E' is n
     var secondAb: Ab.E;
     var secondCd: Cd.E;
     var nope: Abc.Nope;
+    var k: Const.E;
+    var decl: Decl.E;
     abc = secondAbc; // ok
     abc = secondAbcd; // missing 'd'
     ~~~
@@ -59,6 +73,7 @@ tests/cases/compiler/enumAssignmentCompat3.ts(45,1): error TS2322: Type 'E' is n
     abc = nope; // nope!
     ~~~
 !!! error TS2322: Type 'Nope' is not assignable to type 'E'.
+    abc = decl; // ok
     secondAbc = abc; // ok
     secondAbcd = abc; // ok
     secondAb = abc; // missing 'c'
@@ -72,4 +87,13 @@ tests/cases/compiler/enumAssignmentCompat3.ts(45,1): error TS2322: Type 'E' is n
     nope = abc; // nope!
     ~~~~
 !!! error TS2322: Type 'E' is not assignable to type 'Nope'.
+    decl = abc; // ok
+    
+    k = k; // const is only assignable to itself
+    abc = k; // error
+    ~~~
+!!! error TS2322: Type 'Const.E' is not assignable to type 'First.E'.
+    k = abc;
+    ~
+!!! error TS2322: Type 'First.E' is not assignable to type 'Const.E'.
     
\ No newline at end of file
diff --git a/tests/baselines/reference/enumAssignmentCompat3.js b/tests/baselines/reference/enumAssignmentCompat3.js
index 33cfdd28e8..1173bfa181 100644
--- a/tests/baselines/reference/enumAssignmentCompat3.js
+++ b/tests/baselines/reference/enumAssignmentCompat3.js
@@ -27,6 +27,16 @@ namespace Cd {
         c, d,
     }
 }
+namespace Const {
+    export const enum E {
+        a, b, c,
+    }
+}
+namespace Decl {
+    export declare enum E {
+        a, b, c = 3,
+    }
+}
 
 var abc: First.E;
 var secondAbc: Abc.E;
@@ -34,16 +44,24 @@ var secondAbcd: Abcd.E;
 var secondAb: Ab.E;
 var secondCd: Cd.E;
 var nope: Abc.Nope;
+var k: Const.E;
+var decl: Decl.E;
 abc = secondAbc; // ok
 abc = secondAbcd; // missing 'd'
 abc = secondAb; // ok
 abc = secondCd; // missing 'd'
 abc = nope; // nope!
+abc = decl; // ok
 secondAbc = abc; // ok
 secondAbcd = abc; // ok
 secondAb = abc; // missing 'c'
 secondCd = abc; // missing 'a' and 'b'
 nope = abc; // nope!
+decl = abc; // ok
+
+k = k; // const is only assignable to itself
+abc = k; // error
+k = abc;
 
 
 //// [enumAssignmentCompat3.js]
@@ -97,19 +115,29 @@ var Cd;
     })(Cd.E || (Cd.E = {}));
     var E = Cd.E;
 })(Cd || (Cd = {}));
+var Decl;
+(function (Decl) {
+})(Decl || (Decl = {}));
 var abc;
 var secondAbc;
 var secondAbcd;
 var secondAb;
 var secondCd;
 var nope;
+var k;
+var decl;
 abc = secondAbc; // ok
 abc = secondAbcd; // missing 'd'
 abc = secondAb; // ok
 abc = secondCd; // missing 'd'
 abc = nope; // nope!
+abc = decl; // ok
 secondAbc = abc; // ok
 secondAbcd = abc; // ok
 secondAb = abc; // missing 'c'
 secondCd = abc; // missing 'a' and 'b'
 nope = abc; // nope!
+decl = abc; // ok
+k = k; // const is only assignable to itself
+abc = k; // error
+k = abc;
diff --git a/tests/cases/compiler/enumAssignmentCompat3.ts b/tests/cases/compiler/enumAssignmentCompat3.ts
index 94a22c7f34..aaaf96b69c 100644
--- a/tests/cases/compiler/enumAssignmentCompat3.ts
+++ b/tests/cases/compiler/enumAssignmentCompat3.ts
@@ -26,6 +26,16 @@ namespace Cd {
         c, d,
     }
 }
+namespace Const {
+    export const enum E {
+        a, b, c,
+    }
+}
+namespace Decl {
+    export declare enum E {
+        a, b, c = 3,
+    }
+}
 
 var abc: First.E;
 var secondAbc: Abc.E;
@@ -33,13 +43,21 @@ var secondAbcd: Abcd.E;
 var secondAb: Ab.E;
 var secondCd: Cd.E;
 var nope: Abc.Nope;
+var k: Const.E;
+var decl: Decl.E;
 abc = secondAbc; // ok
 abc = secondAbcd; // missing 'd'
 abc = secondAb; // ok
 abc = secondCd; // missing 'd'
 abc = nope; // nope!
+abc = decl; // ok
 secondAbc = abc; // ok
 secondAbcd = abc; // ok
 secondAb = abc; // missing 'c'
 secondCd = abc; // missing 'a' and 'b'
 nope = abc; // nope!
+decl = abc; // ok
+
+k = k; // const is only assignable to itself
+abc = k; // error
+k = abc;