$OpenBSD$

index f72c017..288ae57 100644
--- widget/windows/nsAppShell.cpp.orig	Fri Feb 20 15:40:39 2015
+++ widget/windows/nsAppShell.cpp	Fri Feb 20 15:40:39 2015
@@ -4,6 +4,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "mozilla/ipc/MessageChannel.h"
+#include "mozilla/ipc/WindowsMessageLoop.h"
 #include "nsAppShell.h"
 #include "nsToolkit.h"
 #include "nsThreadUtils.h"
@@ -144,6 +145,8 @@ nsAppShell::Init()
 
   mLastNativeEventScheduled = TimeStamp::NowLoRes();
 
+  mozilla::ipc::windows::InitUIThread();
+
   sTaskbarButtonCreatedMsg = ::RegisterWindowMessageW(kTaskbarButtonEventId);
   NS_ASSERTION(sTaskbarButtonCreatedMsg, "Could not register taskbar button creation message");