--- a/dom/media/MediaStreamGraph.cpp
+++ b/dom/media/MediaStreamGraph.cpp
@@ -342,18 +342,16 @@ MediaStreamGraphImpl::StreamReadyToFinis
 {
   MOZ_ASSERT(aStream->mFinished);
   MOZ_ASSERT(!aStream->mNotifiedFinished);
 
   // The stream is fully finished when all of its track data has been played
   // out.
   if (mProcessedTime >=
       aStream->StreamTimeToGraphTime(aStream->GetStreamBuffer().GetAllTracksEnd()))  {
-    NS_WARN_IF_FALSE(aStream->mNotifiedBlocked,
-      "Should've notified blocked=true for a fully finished stream");
     aStream->mNotifiedFinished = true;
     SetStreamOrderDirty();
     for (uint32_t j = 0; j < aStream->mListeners.Length(); ++j) {
       MediaStreamListener* l = aStream->mListeners[j];
       l->NotifyEvent(this, MediaStreamListener::EVENT_FINISHED);
     }
   }
 }