--- Makefile	(revision 486250)
+++ Makefile	(working copy)
@@ -23,7 +23,7 @@ 
 
 PORTSCOUT=	limitw:1,even
 
-USES=		gettext gnome localbase meson pkgconfig tar:xz
+USES=		compiler:c11 gettext gnome localbase meson pkgconfig tar:xz
 USE_LDCONFIG=	yes
 USE_GNOME=	cairo glib20 introspection:build