diff --git a/angularjs/angular-tests.ts b/angularjs/angular-tests.ts
index bb859c26a..37dae22f4 100644
--- a/angularjs/angular-tests.ts
+++ b/angularjs/angular-tests.ts
@@ -220,6 +220,17 @@ foo.then((x) => {
 });
 
 
+var httpFoo: ng.IHttpPromise<number>;
+httpFoo.then((x) => {
+    // When returning a promise the generic type must be inferred.
+    var innerPromise : ng.IPromise<number>;
+    return innerPromise;
+}).then((x) => {
+    // must still be number.
+    x.toFixed();
+});
+
+
 // angular.element() tests
 var element = angular.element("div.myApp");
 var scope: ng.IScope = element.scope();
diff --git a/angularjs/angular.d.ts b/angularjs/angular.d.ts
index dffd34aa0..e2de2a0b0 100755
--- a/angularjs/angular.d.ts
+++ b/angularjs/angular.d.ts
@@ -821,8 +821,8 @@ declare module ng {
     interface IHttpPromise<T> extends IPromise<T> {
         success(callback: IHttpPromiseCallback<T>): IHttpPromise<T>;
         error(callback: IHttpPromiseCallback<T>): IHttpPromise<T>;
-        then<TResult>(successCallback: (response: IHttpPromiseCallbackArg<T>) => TResult, errorCallback?: (response: IHttpPromiseCallbackArg<T>) => any): IPromise<TResult>;
         then<TResult>(successCallback: (response: IHttpPromiseCallbackArg<T>) => IPromise<TResult>, errorCallback?: (response: IHttpPromiseCallbackArg<T>) => any): IPromise<TResult>;
+        then<TResult>(successCallback: (response: IHttpPromiseCallbackArg<T>) => TResult, errorCallback?: (response: IHttpPromiseCallbackArg<T>) => any): IPromise<TResult>;
     }
 
     interface IHttpProvider extends IServiceProvider {