Index: head/deskutils/gsimplecal/Makefile
===================================================================
--- head/deskutils/gsimplecal/Makefile	(revision 493814)
+++ head/deskutils/gsimplecal/Makefile	(revision 493815)
@@ -1,24 +1,24 @@
 # $FreeBSD$
 
 PORTNAME=	gsimplecal
 PORTVERSION=	2.1
 DISTVERSIONPREFIX=	v
 CATEGORIES=	deskutils
 
 MAINTAINER=	lme@FreeBSD.org
 COMMENT=	Lightweight calendar applet written in C++ using GTK
 
 LICENSE=	GPLv3
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	dmedvinsky
 
 GNU_CONFIGURE=	yes
 
-USES=		autoreconf gmake pkgconfig
+USES=		autoreconf compiler:c++11-lang gmake pkgconfig
 USE_GNOME=	glib20 gtk30
 
 PLIST_FILES=	bin/gsimplecal \
 		man/man1/gsimplecal.1.gz
 
 .include <bsd.port.mk>