--- a/dom/media/Benchmark.cpp
+++ b/dom/media/Benchmark.cpp
@@ -174,19 +174,19 @@ BenchmarkPlayback::InitDecoder(TrackInfo
   RefPtr<PDMFactory> platform = new PDMFactory();
   mDecoder = platform->CreateDecoder(aInfo, mDecoderTaskQueue, this);
   if (!mDecoder) {
     MainThreadShutdown();
     return;
   }
   RefPtr<Benchmark> ref(mMainThreadState);
   mDecoder->Init()->Then(
-    ref->Thread(), __func__,
+    Thread(), __func__,
     [this, ref](TrackInfo::TrackType aTrackType) {
-      Dispatch(NS_NewRunnableFunction([this, ref]() { InputExhausted(); }));
+      InputExhausted();
     },
     [this, ref](MediaDataDecoder::DecoderFailureReason aReason) {
       MainThreadShutdown();
     });
 }
 
 void
 BenchmarkPlayback::MainThreadShutdown()