diff --git a/dom/plugins/ipc/FunctionBrokerIPCUtils.h b/dom/plugins/ipc/FunctionBrokerIPCUtils.h
index 23ec890134e2..c4b72dbe95af 100644
--- a/dom/plugins/ipc/FunctionBrokerIPCUtils.h
+++ b/dom/plugins/ipc/FunctionBrokerIPCUtils.h
@@ -8,6 +8,7 @@
 #define dom_plugins_ipc_functionbrokeripcutils_h 1
 
 #include "ipc/EnumSerializer.h"
+#include "ipc/IPCMessageUtilsSpecializations.h"
 #include "PluginMessageUtils.h"
 
 #if defined(XP_WIN)