diff --git a/src/Rx.ts b/src/Rx.ts
index d6d9a43799..1eb77953fe 100644
--- a/src/Rx.ts
+++ b/src/Rx.ts
@@ -106,6 +106,7 @@ import './add/operator/zip';
 import './add/operator/zipAll';
 
 /* tslint:disable:no-unused-variable */
+import {Operator} from './Operator';
 import {Subscription} from './Subscription';
 import {Subscriber} from './Subscriber';
 import {AsyncSubject} from './subject/AsyncSubject';
@@ -138,6 +139,7 @@ export {
     Subject,
     Scheduler,
     Observable,
+    Operator,
     Subscriber,
     Subscription,
     Symbol,