diff --git a/spotify-web-api-js/spotify-web-api-js.d.ts b/spotify-web-api-js/spotify-web-api-js.d.ts
index 6e703588e..bb980b26f 100644
--- a/spotify-web-api-js/spotify-web-api-js.d.ts
+++ b/spotify-web-api-js/spotify-web-api-js.d.ts
@@ -4,6 +4,7 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference path="../spotify-api/spotify-api.d.ts" />
+/// <reference path="../es6-promise/es6-promise.d.ts"/>
 
 /**
  * Declare SpotifyWebApi variable, sincle that is the name of the function in spotify-web-api-js.