diff --git a/dom/media/mediasource/TrackBuffersManager.cpp b/dom/media/mediasource/TrackBuffersManager.cpp
index ad7be5e830..1a5155b1a3 100644
--- a/dom/media/mediasource/TrackBuffersManager.cpp
+++ b/dom/media/mediasource/TrackBuffersManager.cpp
@@ -46,7 +46,7 @@ TrackBuffersManager::TrackBuffersManager(dom::SourceBuffer* aParent, MediaSource
   , mParser(ContainerParser::CreateForMIMEType(aType))
   , mProcessedInput(0)
   , mAppendRunning(false)
-  , mTaskQueue(new MediaTaskQueue(GetMediaThreadPool(MediaThreadType::PLAYBACK)))
+  , mTaskQueue(new MediaTaskQueue(GetMediaThreadPool()))
   , mParent(new nsMainThreadPtrHolder<dom::SourceBuffer>(aParent, false /* strict */))
   , mParentDecoder(new nsMainThreadPtrHolder<MediaSourceDecoder>(aParentDecoder, false /* strict */))
   , mAbort(false)