--- a/dom/media/MediaStreamGraph.cpp
+++ b/dom/media/MediaStreamGraph.cpp
@@ -1452,17 +1452,17 @@ public:
 
     // mGraph's thread is not running so it's OK to do whatever here
     for (MediaStream* stream : mGraph->AllStreams()) {
       // Clean up all MediaSegments since we cannot release Images too
       // late during shutdown. Also notify listeners that they were removed
       // so they can clean up any gfx resources.
       if (SourceMediaStream* source = stream->AsSourceStream()) {
         // Finishing a SourceStream prevents new data from being appended.
-        source->FinishPending();
+        source->FinishOnGraphThread();
       }
       stream->GetStreamTracks().Clear();
       stream->RemoveAllListenersImpl();
     }
 
     mGraph->mForceShutdownTicket = nullptr;
 
     // We can't block past the final LIFECYCLE_WAITING_FOR_STREAM_DESTRUCTION