Index: head/comms/gpredict/Makefile
===================================================================
--- head/comms/gpredict/Makefile	(revision 498526)
+++ head/comms/gpredict/Makefile	(revision 498527)
@@ -1,29 +1,29 @@
 # Created by: Matt Dawson <matt@mattsnetwork.co.uk>
 # $FreeBSD$
 
 PORTNAME=	gpredict
 DISTVERSION=	2.2.1
 CATEGORIES=	comms hamradio
 MASTER_SITES=	https://github.com/csete/${PORTNAME}/releases/download/v${DISTVERSION}/
 
 MAINTAINER=	hamradio@FreeBSD.org
 COMMENT=	Amateur Radio satellite tracking and prediction
 
 LICENSE=	GPLv2+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 LIB_DEPENDS=	libcurl.so:ftp/curl \
 		libhamlib.so:comms/hamlib \
 		libgoocanvas-2.0.so:graphics/goocanvas2 \
 		libgps.so:astro/gpsd
 
-USES=		gettext gmake pkgconfig tar:bz2
+USES=		compiler:c11 gettext gmake gnome pkgconfig tar:bz2
 GNU_CONFIGURE=	yes
 USE_GNOME=	cairo gdkpixbuf2 gtk30 intltool
 
 post-patch:
 	@${REINPLACE_CMD} -e \
 		'/^Icon/s|=.*|=${PREFIX}/share/pixmaps/gpredict-icon.png|' \
 		${WRKSRC}/data/desktop/gpredict.desktop.in
 
 .include <bsd.port.mk>