--- a/dom/media/MediaFormatReader.cpp
+++ b/dom/media/MediaFormatReader.cpp
@@ -2733,19 +2733,16 @@ MediaFormatReader::SetBlankDecode(TrackT
   }
 
   LOG("%s, decoder.mIsBlankDecode = %d => aIsBlankDecode = %d",
       TrackTypeToStr(aTrack), decoder.mIsBlankDecode, aIsBlankDecode);
 
   decoder.mIsBlankDecode = aIsBlankDecode;
   decoder.Flush();
   decoder.ShutdownDecoder();
-  ScheduleUpdate(TrackInfo::kVideoTrack);
-
-  return;
 }
 
 void
 MediaFormatReader::OnFirstDemuxCompleted(TrackInfo::TrackType aType,
                                          RefPtr<MediaTrackDemuxer::SamplesHolder> aSamples)
 {
   MOZ_ASSERT(OnTaskQueue());