diff --git a/angularjs/angular.d.ts b/angularjs/angular.d.ts
index 34e2fe8bff..2f2c68becf 100755
--- a/angularjs/angular.d.ts
+++ b/angularjs/angular.d.ts
@@ -376,7 +376,7 @@ declare module ng {
         $root: IRootScopeService;
         this: IRootScopeService;
 
-        $id: string;
+        $id: number;
 
         // Hidden members
         $$isolateBindings: any;