diff --git a/src/main/java/rx/internal/operators/OnSubscribeRedo.java b/src/main/java/rx/internal/operators/OnSubscribeRedo.java
index cef19d4c81..9aa6dbc663 100644
--- a/src/main/java/rx/internal/operators/OnSubscribeRedo.java
+++ b/src/main/java/rx/internal/operators/OnSubscribeRedo.java
@@ -375,7 +375,7 @@ public void request(final long n) {
                     // producer will call setProducer and request with consumerCapacity on the new producer. 
                     producer.request(n);
                 } else
-                if (resumeBoundary.compareAndSet(true, false)) {
+                if (c==0 && resumeBoundary.compareAndSet(true, false)) {
                     worker.schedule(subscribeToSource);
                 }
             }