Index: head/science/shelxle/Makefile
===================================================================
--- head/science/shelxle/Makefile	(revision 561616)
+++ head/science/shelxle/Makefile	(revision 561617)
@@ -1,26 +1,26 @@
 # $FreeBSD$
 
 PORTNAME=	shelxle
 DISTVERSION=	1.0.1205
 CATEGORIES=	science # chemistry
 MASTER_SITES=	SF/${PORTNAME}/code/
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Graphical user interface for small-molecule structure refinement
 
 LICENSE=	LGPL21
 LICENSE_FILE=	${WRKSRC}/COPYING
 
-USES=		dos2unix gl qmake qt:5 tar:bz2
+USES=		compiler:c++11-lang dos2unix gl qmake qt:5 tar:bz2
 DOS2UNIX_FILES=	shelXle.pro
 USE_QT=		core gui network opengl widgets buildtools_build
 USE_GL=		gl
 
 PLIST_FILES=	bin/shelxle \
 		share/applications/shelxle.desktop \
 		share/pixmaps/shelxle.png
 
 post-patch:
 	@${FIND} ${WRKSRC} -name "*.cpp" -o -name "*.h" | ${XARGS} ${REINPLACE_CMD} -e 's|NULL|nullptr|g'
 
 .include <bsd.port.mk>