--- a/dom/media/MediaDecoderStateMachine.cpp
+++ b/dom/media/MediaDecoderStateMachine.cpp
@@ -1015,17 +1015,17 @@ class MediaDecoderStateMachine::Complete
 public:
   explicit CompletedState(Master* aPtr) : StateObject(aPtr) {}
 
   void Enter()
   {
     // We've decoded all samples. We don't need decoders anymore.
     Reader()->ReleaseResources();
 
-    mMaster->ScheduleStateMachine();
+    Step();
   }
 
   void Exit() override
   {
     mSentPlaybackEndedEvent = false;
   }
 
   void Step() override