diff --git a/src/lib/es5.d.ts b/src/lib/es5.d.ts
index ced21a6d72af1..544562660db52 100644
--- a/src/lib/es5.d.ts
+++ b/src/lib/es5.d.ts
@@ -1,5 +1,4 @@
 /// <reference lib="decorators" />
-/// <reference lib="decorators.legacy" />
 
 /////////////////////////////
 /// ECMAScript APIs