diff --git a/include/Swiften/Server/UserRegistry.h b/include/Swiften/Server/UserRegistry.h
index 2ded68e32f0f0514c79c47c780d6497e95c5ad55..469446022a7a62e2b47122806fcf7fa839fb8982 100644
--- a/include/Swiften/Server/UserRegistry.h
+++ b/include/Swiften/Server/UserRegistry.h
@@ -8,7 +8,6 @@
 
 #include <string>
 #include <Swiften/Base/SafeByteArray.h>
-#include <boost/signal.hpp>
 #include "Swiften/Server/ServerFromClientSession.h"
 
 namespace Swift {