diff --git a/ember/ember.d.ts b/ember/ember.d.ts
index 40d2f9859..03bce98f7 100644
--- a/ember/ember.d.ts
+++ b/ember/ember.d.ts
@@ -1501,6 +1501,7 @@ declare module Ember {
     }
     module RSVP {
         class Promise {
+			constructor(resolver: Function, label?: string);
             then(done?: Function, fail?: Function): Promise;
         }
     }