diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
index 79ba59b94b..28bc103e4c 100644
--- a/src/compiler/parser.ts
+++ b/src/compiler/parser.ts
@@ -1082,11 +1082,11 @@ namespace ts {
                 }
                 return token !== SyntaxKind.AsteriskToken && token !== SyntaxKind.OpenBraceToken && canFollowModifier();
             }
-            if (token === SyntaxKind.AbstractKeyword) {
-                nextToken();
-                // 'abstract' can precede class declarations and member function declarations.
-                return token === SyntaxKind.ClassKeyword || token === SyntaxKind.Identifier;
-            }
+            // if (token === SyntaxKind.AbstractKeyword) {
+            //     nextToken();
+            //     // 'abstract' can precede class declarations and member function declarations.
+            //     return token === SyntaxKind.ClassKeyword || token === SyntaxKind.Identifier;
+            // }
             if (token === SyntaxKind.DefaultKeyword) {
                 return nextTokenIsClassOrFunction();
             }