diff --git a/x11-toolkits/libwnck/Makefile b/x11-toolkits/libwnck/Makefile
index 9ce843dd6a7b..a7f49511a960 100644
--- a/x11-toolkits/libwnck/Makefile
+++ b/x11-toolkits/libwnck/Makefile
@@ -24,6 +24,7 @@ USE_BZIP2=	yes
 LIB_DEPENDS=	startup-notification-1.0:${PORTSDIR}/x11/startup-notification
 
 USE_GETTEXT=	yes
+USE_XLIB=	yes
 USE_GMAKE=	yes
 USE_GNOME=	gnomehack gtk20 ltverhack referencehack
 USE_BISON=	yes