diff --git a/dom/workers/WorkerRunnable.cpp b/dom/workers/WorkerRunnable.cpp
index 1e8355b95c2a..544568d4baad 100644
--- a/dom/workers/WorkerRunnable.cpp
+++ b/dom/workers/WorkerRunnable.cpp
@@ -709,9 +709,6 @@ bool WorkerDebuggeeRunnable::PreDispatch(WorkerPrivate* aWorkerPrivate) {
     }
 
     mSender = new ThreadSafeWorkerRef(strongRef);
-    if (!mSender) {
-      return false;
-    }
   }
 
   return WorkerRunnable::PreDispatch(aWorkerPrivate);