diff --git a/rx.js/rx-tests.ts b/rx.js/rx-tests.ts
index d95988ce6..aa94bcffc 100644
--- a/rx.js/rx-tests.ts
+++ b/rx.js/rx-tests.ts
@@ -1,4 +1,4 @@
-///<reference path="rx.js.d.ts"/>
+///<reference path="rx.d.ts"/>
 
 // Disposable
 var d: Rx.IDisposable = new Rx.Disposable(() => { });