diff --git a/include/transport/rosterresponder.h b/include/transport/rosterresponder.h
index f716ddcdbd51756689fdffdc23e7a87ebe6c679f..4aaa21380e774be2a40e158eb944c0dec162b39b 100644
--- a/include/transport/rosterresponder.h
+++ b/include/transport/rosterresponder.h
@@ -21,10 +21,11 @@
 #pragma once
 
 #include <vector>
-#include "Swiften/Swiften.h"
 #include "Swiften/Queries/Responder.h"
 #include "Swiften/Elements/RosterPayload.h"
 
+#include <boost/signal.hpp>
+
 namespace Transport {
 
 class UserManager;