diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 4f1f796e3e..c020aa84b2 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -1061,7 +1061,7 @@ module ts {
         function getTypeAliasForTypeLiteral(type: Type): Symbol {
             if (type.symbol && type.symbol.flags & SymbolFlags.TypeLiteral) {
                 var node = type.symbol.declarations[0].parent;
-                while (node.kind === SyntaxKind.ParenType) {
+                while (node.kind === SyntaxKind.ParenthesizedType) {
                     node = node.parent;
                 }
                 if (node.kind === SyntaxKind.TypeAliasDeclaration) {
@@ -3041,8 +3041,8 @@ module ts {
                     return getTypeFromTupleTypeNode(<TupleTypeNode>node);
                 case SyntaxKind.UnionType:
                     return getTypeFromUnionTypeNode(<UnionTypeNode>node);
-                case SyntaxKind.ParenType:
-                    return getTypeFromTypeNode((<ParenTypeNode>node).type);
+                case SyntaxKind.ParenthesizedType:
+                    return getTypeFromTypeNode((<ParenthesizedTypeNode>node).type);
                 case SyntaxKind.FunctionType:
                 case SyntaxKind.ConstructorType:
                 case SyntaxKind.TypeLiteral:
@@ -8402,8 +8402,8 @@ module ts {
                     return checkTupleType(<TupleTypeNode>node);
                 case SyntaxKind.UnionType:
                     return checkUnionType(<UnionTypeNode>node);
-                case SyntaxKind.ParenType:
-                    return checkSourceElement((<ParenTypeNode>node).type);
+                case SyntaxKind.ParenthesizedType:
+                    return checkSourceElement((<ParenthesizedTypeNode>node).type);
                 case SyntaxKind.FunctionDeclaration:
                     return checkFunctionDeclaration(<FunctionDeclaration>node);
                 case SyntaxKind.Block:
diff --git a/src/compiler/emitter.ts b/src/compiler/emitter.ts
index 810e913006..de3c5ca19c 100644
--- a/src/compiler/emitter.ts
+++ b/src/compiler/emitter.ts
@@ -518,8 +518,8 @@ module ts {
                     return emitTupleType(<TupleTypeNode>type);
                 case SyntaxKind.UnionType:
                     return emitUnionType(<UnionTypeNode>type);
-                case SyntaxKind.ParenType:
-                    return emitParenType(<ParenTypeNode>type);
+                case SyntaxKind.ParenthesizedType:
+                    return emitParenType(<ParenthesizedTypeNode>type);
                 case SyntaxKind.FunctionType:
                 case SyntaxKind.ConstructorType:
                     return emitSignatureDeclarationWithJsDocComments(<SignatureDeclaration>type);
@@ -583,7 +583,7 @@ module ts {
                 emitSeparatedList(type.types, " | ", emitType);
             }
 
-            function emitParenType(type: ParenTypeNode) {
+            function emitParenType(type: ParenthesizedTypeNode) {
                 write("(");
                 emitType(type.type);
                 write(")");
diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
index 6b17338638..a1636357fe 100644
--- a/src/compiler/parser.ts
+++ b/src/compiler/parser.ts
@@ -253,8 +253,8 @@ module ts {
                 return children((<TupleTypeNode>node).elementTypes);
             case SyntaxKind.UnionType:
                 return children((<UnionTypeNode>node).types);
-            case SyntaxKind.ParenType:
-                return child((<ParenTypeNode>node).type);
+            case SyntaxKind.ParenthesizedType:
+                return child((<ParenthesizedTypeNode>node).type);
             case SyntaxKind.ArrayLiteral:
                 return children((<ArrayLiteral>node).elements);
             case SyntaxKind.ObjectLiteral:
@@ -1996,8 +1996,8 @@ module ts {
             return finishNode(node);
         }
 
-        function parseParenType(): ParenTypeNode {
-            var node = <ParenTypeNode>createNode(SyntaxKind.ParenType);
+        function parseParenType(): ParenthesizedTypeNode {
+            var node = <ParenthesizedTypeNode>createNode(SyntaxKind.ParenthesizedType);
             parseExpected(SyntaxKind.OpenParenToken);
             node.type = parseType();
             parseExpected(SyntaxKind.CloseParenToken);
diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index a118061786..242f6243a7 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -163,7 +163,7 @@ module ts {
         ArrayType,
         TupleType,
         UnionType,
-        ParenType,
+        ParenthesizedType,
         // Expression
         ArrayLiteral,
         ObjectLiteral,
@@ -243,7 +243,7 @@ module ts {
         FirstFutureReservedWord = ImplementsKeyword,
         LastFutureReservedWord = YieldKeyword,
         FirstTypeNode = TypeReference,
-        LastTypeNode = ParenType,
+        LastTypeNode = ParenthesizedType,
         FirstPunctuation = OpenBraceToken,
         LastPunctuation = CaretEqualsToken,
         FirstToken = EndOfFileToken,
@@ -425,7 +425,7 @@ module ts {
         types: NodeArray<TypeNode>;
     }
 
-    export interface ParenTypeNode extends TypeNode {
+    export interface ParenthesizedTypeNode extends TypeNode {
         type: TypeNode;
     }