diff --git a/ember/ember.d.ts b/ember/ember.d.ts
index f822a14132..5d56143bd3 100644
--- a/ember/ember.d.ts
+++ b/ember/ember.d.ts
@@ -100,7 +100,7 @@ declare module Ember {
 		without*/
     }
 
-    export interface NativeArray extends Array {
+    export interface NativeArray<T> extends Array<T> {
         activate();
     }