diff --git a/include/Swiften/Server/ServerStanzaChannel.h b/include/Swiften/Server/ServerStanzaChannel.h
index 1b26921635466861888bcbb343d83cba5c5edfc0..cc9c82279e362d1b050eb8304a9313c077e99bac 100644
--- a/include/Swiften/Server/ServerStanzaChannel.h
+++ b/include/Swiften/Server/ServerStanzaChannel.h
@@ -16,7 +16,7 @@
 #include "Swiften/Elements/Presence.h"
 #include "Swiften/TLS/Certificate.h"
 #include <Swiften/Version.h>
-#define HAVE_SWIFTEN_3  SWIFTEN_VERSION >= 0x030000
+#define HAVE_SWIFTEN_3  (SWIFTEN_VERSION >= 0x030000)
 
 namespace Swift {
 	class Error;