--- a/dom/media/MediaQueue.h
+++ b/dom/media/MediaQueue.h
@@ -74,17 +74,17 @@ public:
   inline T* PeekFront() {
     ReentrantMonitorAutoEnter mon(mReentrantMonitor);
     return static_cast<T*>(nsDeque::PeekFront());
   }
 
   void Reset() {
     ReentrantMonitorAutoEnter mon(mReentrantMonitor);
     while (GetSize() > 0) {
-      RefPtr<T> x = PopFront();
+      RefPtr<T> x = dont_AddRef(static_cast<T*>(nsDeque::PopFront()));
     }
     mEndOfStream = false;
   }
 
   bool AtEndOfStream() {
     ReentrantMonitorAutoEnter mon(mReentrantMonitor);
     return GetSize() == 0 && mEndOfStream;
   }