diff --git a/angularjs/angular.d.ts b/angularjs/angular.d.ts
index b08fefe3e2..b8d683c5c1 100644
--- a/angularjs/angular.d.ts
+++ b/angularjs/angular.d.ts
@@ -391,7 +391,7 @@ module ng {
 
     interface IDeferred {
         resolve(value?: any): void;
-        reject(reason?: string): void;
+        reject(reason?: any): void;
         promise: IPromise;
     }