diff --git a/rx/rx-lite.d.ts b/rx/rx-lite.d.ts
index 3ea8c6ed8..84f991449 100644
--- a/rx/rx-lite.d.ts
+++ b/rx/rx-lite.d.ts
@@ -150,6 +150,7 @@ declare module Rx {
 
 		immediate: IScheduler;
 		currentThread: ICurrentThreadScheduler;
+                default: IScheduler; // alias for Scheduler.timeout
 		timeout: IScheduler;
 	}