diff --git a/modules/angular2/src/core/facade/promise.dart b/modules/angular2/src/core/facade/promise.dart
index f8a6c3f617..0970f37eb6 100644
--- a/modules/angular2/src/core/facade/promise.dart
+++ b/modules/angular2/src/core/facade/promise.dart
@@ -34,6 +34,10 @@ class PromiseWrapper {
     async.scheduleMicrotask(fn);
   }
 
+  static bool isPromise(obj) {
+    return obj is Future;
+  }
+
   static PromiseCompleter<dynamic> completer() =>
       new PromiseCompleter(new Completer());
 }
diff --git a/modules/angular2/src/core/facade/promise.ts b/modules/angular2/src/core/facade/promise.ts
index 27bbc41a7f..eaeff6d351 100644
--- a/modules/angular2/src/core/facade/promise.ts
+++ b/modules/angular2/src/core/facade/promise.ts
@@ -44,6 +44,8 @@ export class PromiseWrapper {
     PromiseWrapper.then(PromiseWrapper.resolve(null), computation, (_) => {});
   }
 
+  static isPromise(obj: any): boolean { return obj instanceof Promise; }
+
   static completer(): PromiseCompleter<any> {
     var resolve;
     var reject;