diff --git a/content/media/TextTrackList.cpp b/content/media/TextTrackList.cpp
index 30893c06bbcc..d03d6ff74fd6 100644
--- a/content/media/TextTrackList.cpp
+++ b/content/media/TextTrackList.cpp
@@ -120,7 +120,7 @@ void
 TextTrackList::CreateAndDispatchTrackEventRunner(TextTrack* aTrack,
                                                  const nsAString& aEventName)
 {
-  TrackEventInitInitializer eventInit;
+  TrackEventInit eventInit;
   eventInit.mBubbles = false;
   eventInit.mCancelable = false;
   eventInit.mTrack = aTrack;