Index: head/games/chessx/Makefile
===================================================================
--- head/games/chessx/Makefile	(revision 504090)
+++ head/games/chessx/Makefile	(revision 504091)
@@ -1,31 +1,32 @@
 # $FreeBSD$
 
 PORTNAME=	chessx
 PORTVERSION=	1.4.6
 PORTREVISION=	1
 CATEGORIES=	games
 MASTER_SITES=	SF
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Qt 5 chess database application
 
 LICENSE=	GPLv2+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
-USES=		desktop-file-utils qmake:outsource qt:5 shared-mime-info tar:tgz
+USES=		compiler:c++11-lang desktop-file-utils qmake:outsource qt:5 \
+		shared-mime-info tar:tgz
 USE_QT=		buildtools_build concurrent core gui linguisttools_build multimedia \
 		network opengl printsupport svg widgets xml
 
 PLIST_FILES=	bin/chessx \
 		share/applications/chessx.desktop \
 		share/pixmaps/chessx.png
 
 OPTIONS_DEFINE=	STOCKFISH CRAFTY
 
 CRAFTY_DESC=	Install Crafty Chess Application
 CRAFTY_RUN_DEPENDS=	crafty:games/crafty
 
 STOCKFISH_DESC=	Install Stockfish Chess Engine
 STOCKFISH_RUN_DEPENDS=	stockfish:games/stockfish
 
 .include <bsd.port.mk>