diff --git a/spec/Subject-spec.ts b/spec/Subject-spec.ts
index 0f11f03be2..74ec21fb63 100644
--- a/spec/Subject-spec.ts
+++ b/spec/Subject-spec.ts
@@ -524,6 +524,10 @@ describe('Subject', () => {
 });
 
 describe('AnonymousSubject', () => {
+  it('should be exposed', () => {
+    expect(Rx.AnonymousSubject).to.be.a('function');
+  });
+
   it('should not eager', () => {
     let subscribed = false;
 
diff --git a/src/Rx.ts b/src/Rx.ts
index cc6322359f..2f4ca8f8bd 100644
--- a/src/Rx.ts
+++ b/src/Rx.ts
@@ -2,7 +2,7 @@
 // Subject imported before Observable to bypass circular dependency issue since
 // Subject extends Observable and Observable references Subject in it's
 // definition
-export {Subject} from './Subject';
+export {Subject, AnonymousSubject} from './Subject';
 /* tslint:enable:no-unused-variable */
 export {Observable} from './Observable';