--- src/message_queue.h.orig
+++ src/message_queue.h
@@ -73,7 +73,7 @@ class message_queue
 
  protected:
 	std::list<message*> myqueue;
-	mutex mymutex;
+	dd::mutex mymutex;
 	condvar emptycondvar;
 	condvar ackcondvar;
 	bool msginqueue;
