--- a/dom/media/encoder/OpusTrackEncoder.cpp
+++ b/dom/media/encoder/OpusTrackEncoder.cpp
@@ -1,16 +1,17 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "OpusTrackEncoder.h"
 #include "nsString.h"
 #include "GeckoProfiler.h"
 #include "mozilla/CheckedInt.h"
+#include "VideoUtils.h"
 
 #include <opus/opus.h>
 
 #undef LOG
 #define LOG(args, ...)
 
 namespace mozilla {