--- a/layout/forms/nsGfxCheckboxControlFrame.cpp
+++ b/layout/forms/nsGfxCheckboxControlFrame.cpp
@@ -1,15 +1,16 @@
 /* -*- 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 "nsGfxCheckboxControlFrame.h"
 
+#include "gfxUtils.h"
 #include "mozilla/gfx/2D.h"
 #include "nsIContent.h"
 #include "nsCOMPtr.h"
 #include "nsLayoutUtils.h"
 #include "nsRenderingContext.h"
 #include "nsIDOMHTMLInputElement.h"
 #include "nsDisplayList.h"
 #include <algorithm>