diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
index 4547df1579..155ad3999b 100644
--- a/src/compiler/parser.ts
+++ b/src/compiler/parser.ts
@@ -4784,7 +4784,7 @@ namespace ts {
                 parseExpected(SyntaxKind.CloseParenToken);
             }
             else {
-                // Keep shape of node to not avoid degrading performance.
+                // Keep shape of node to avoid degrading performance.
                 result.variableDeclaration = undefined;
             }