diff --git a/promises-a-plus/promises-a-plus-tests.ts b/promises-a-plus/promises-a-plus-tests.ts
index b6c4060758..222cca14d8 100644
--- a/promises-a-plus/promises-a-plus-tests.ts
+++ b/promises-a-plus/promises-a-plus-tests.ts
@@ -1,5 +1,5 @@
 /// <reference types="rx"/>
-/// <reference types="Q"/>
+/// <reference types="q"/>
 /// <reference types="when"/>
 
 var thenNum: PromisesAPlus.Thenable<number>;