--- a/dom/media/MediaFormatReader.cpp
+++ b/dom/media/MediaFormatReader.cpp
@@ -2893,19 +2893,17 @@ MediaFormatReader::NotifyTrackDemuxers()
   }
 }
 
 void
 MediaFormatReader::NotifyDataArrived()
 {
   MOZ_ASSERT(OnTaskQueue());
 
-  if (mShutdown
-      || !mDemuxer
-      || (!mDemuxerInitDone && !mDemuxerInitRequest.Exists())) {
+  if (mShutdown || !mDemuxer || !mDemuxerInitDone) {
     return;
   }
 
   if (mNotifyDataArrivedPromise.Exists()) {
     // Already one in progress. Set the dirty flag so we can process it later.
     mPendingNotifyDataArrived = true;
     return;
   }