diff --git a/dom/media/VideoUtils.cpp b/dom/media/VideoUtils.cpp
index a5d2d318f551..469286a9bd51 100644
--- a/dom/media/VideoUtils.cpp
+++ b/dom/media/VideoUtils.cpp
@@ -256,7 +256,7 @@ already_AddRefed<SharedThreadPool> GetMediaThreadPool(MediaThreadType aType)
     }
   }
 
-  return already_AddRefed<SharedThreadPool>(pool.forget());
+  return pool.forget();
 }
 
 bool