diff --git a/dom/media/MediaDecoderStateMachine.cpp b/dom/media/MediaDecoderStateMachine.cpp
index 91d0514aa1d5..edd851379297 100644
--- a/dom/media/MediaDecoderStateMachine.cpp
+++ b/dom/media/MediaDecoderStateMachine.cpp
@@ -2322,8 +2322,6 @@ MediaDecoderStateMachine::FinishDecodeFirstFrame()
     mReader->ReadUpdatedMetadata(&mInfo);
   }
 
-  nsAutoPtr<MediaInfo> info(new MediaInfo());
-  *info = mInfo;
   if (!mNotifyMetadataBeforeFirstFrame) {
     // If we didn't have duration and/or start time before, we should now.
     EnqueueLoadedMetadataEvent();