--- a/dom/media/ChannelMediaDecoder.cpp
+++ b/dom/media/ChannelMediaDecoder.cpp
@@ -434,17 +434,16 @@ ChannelMediaDecoder::DownloadProgressed(
       __func__,
       [ =, self = RefPtr<ChannelMediaDecoder>(this) ](MediaStatistics aStats) {
         if (IsShutdown()) {
           return;
         }
         mCanPlayThrough = aStats.CanPlayThrough();
         GetStateMachine()->DispatchCanPlayThrough(mCanPlayThrough);
         mResource->ThrottleReadahead(ShouldThrottleDownload(aStats));
-        AbstractThread::AutoEnter context(AbstractMainThread());
         // Update readyState since mCanPlayThrough might have changed.
         GetOwner()->UpdateReadyState();
       },
       []() { MOZ_ASSERT_UNREACHABLE("Promise not resolved"); });
 }
 
 /* static */ ChannelMediaDecoder::PlaybackRateInfo
 ChannelMediaDecoder::ComputePlaybackRate(const MediaChannelStatistics& aStats,