diff --git a/angularjs/angular.d.ts b/angularjs/angular.d.ts
index 137f72fe15..83e0c9044c 100755
--- a/angularjs/angular.d.ts
+++ b/angularjs/angular.d.ts
@@ -276,6 +276,15 @@ declare module ng {
         cancel(promise: IPromise<any>): boolean;
     }
 
+    ///////////////////////////////////////////////////////////////////////////
+    // IntervalService
+    // see http://docs.angularjs.org/api/ng.$interval
+    ///////////////////////////////////////////////////////////////////////////
+    interface IIntervalService {
+        (func: Function, delay: number, count?: number, invokeApply?: boolean): IPromise<any>;
+        cancel(promise: IPromise<any>): boolean;
+    }
+
     ///////////////////////////////////////////////////////////////////////////
     // FilterService
     // see http://docs.angularjs.org/api/ng.$filter