diff --git a/promises-a-plus/promises-a-plus-tests.ts b/promises-a-plus/promises-a-plus-tests.ts
index fa1453645a..29ca0989bf 100644
--- a/promises-a-plus/promises-a-plus-tests.ts
+++ b/promises-a-plus/promises-a-plus-tests.ts
@@ -2,7 +2,8 @@
 /// <reference path="../rx.js/rx.async.d.ts"/>
 /// <reference path="../es6-promises/es6-promises.d.ts"/>
 /// <reference path="../q/Q.d.ts"/>
-/// <reference path="../when/when.d.ts"/>
+import When = require("../when/when");
+
 
 var thenNum: PromisesAPlus.Thenable<number>; 
 var thenStr: PromisesAPlus.Thenable<string>;