Index: head/x11-toolkits/libdazzle/Makefile
===================================================================
--- head/x11-toolkits/libdazzle/Makefile	(revision 485727)
+++ head/x11-toolkits/libdazzle/Makefile	(revision 485728)
@@ -1,20 +1,20 @@
 # $FreeBSD$
 
 PORTNAME=	libdazzle
 PORTVERSION=	3.28.5
 CATEGORIES=	x11-toolkits
 MASTER_SITES=	GNOME
 DIST_SUBDIR=	gnome
 
 MAINTAINER=	gnome@FreeBSD.org
 COMMENT=	Staging and stabilizing for facy Glib and Gtk+ features
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 BUILD_DEPENDS=	valac:lang/vala
 
-USES=		gnome meson pkgconfig tar:xz
+USES=		compiler:c11 gnome meson pkgconfig tar:xz
 USE_GNOME=	cairo gdkpixbuf2 gtk30 introspection:build
 
 .include <bsd.port.mk>