Index: head/x11/xfce4-terminal/Makefile
===================================================================
--- head/x11/xfce4-terminal/Makefile	(revision 513414)
+++ head/x11/xfce4-terminal/Makefile	(revision 513415)
@@ -1,33 +1,34 @@
 # Created by: Matt Lancereau
 # $FreeBSD$
 
 PORTNAME=	xfce4-terminal
 PORTVERSION=	0.8.8
 PORTREVISION=	1
 CATEGORIES=	x11 xfce
 MASTER_SITES=	XFCE/apps
 DIST_SUBDIR=	xfce4
 
 MAINTAINER=	xfce@FreeBSD.org
 COMMENT=	Terminal emulator for the X windowing system
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/COPYING
 
-USES=		gettext-tools gmake gnome pkgconfig tar:bzip2 xfce xorg
+USES=		compiler:c11 gettext-tools gmake gnome pkgconfig tar:bzip2 \
+		xfce xorg
 USE_GNOME=	cairo gdkpixbuf2 glib20 gtk30 intltool libxml2 vte3
 USE_XFCE=	libmenu xfconf
 USE_XORG=	ice sm x11
 
 GNU_CONFIGURE=	yes
 INSTALL_TARGET=	install-strip
 SUB_FILES=	pkg-message
 CONFIGURE_ARGS=	--without-gnome-default-appsdir
 
 OPTIONS_DEFINE=		NLS
 OPTIONS_SUB=		yes
 
 NLS_USES=		gettext-runtime
 NLS_CONFIGURE_ENABLE=	nls
 
 .include <bsd.port.mk>