diff --git a/src/rx.ts b/src/rx.ts
index 9c2f8dc490..3ab3ebcea6 100644
--- a/src/rx.ts
+++ b/src/rx.ts
@@ -1 +1,3 @@
-export * from './observable/observable';
\ No newline at end of file
+import {Observable} from './observable/observable';
+//TODO: remove this hack once we have a better global bundling solution
+(<any>window).Observable = Observable;
\ No newline at end of file