diff --git a/src/compiler/transformers/es6.ts b/src/compiler/transformers/es6.ts
index 5dd2b154c01..886ee1b8e40 100644
--- a/src/compiler/transformers/es6.ts
+++ b/src/compiler/transformers/es6.ts
@@ -790,7 +790,7 @@ namespace ts {
                 const body = saveStateAndInvoke(constructor, hasSynthesizedSuper ? transformConstructorBodyWithSynthesizedSuper : transformConstructorBodyWithoutSynthesizedSuper);
                 addRange(statements, body);
             }
-            if (constructor ? hasSynthesizedSuper : extendsClauseElement) {
+            if (extendsClauseElement) {
                 statements.push(
                     createReturn(
                         createIdentifier("_this")