Index: head/multimedia/qwinff/Makefile
===================================================================
--- head/multimedia/qwinff/Makefile	(revision 563853)
+++ head/multimedia/qwinff/Makefile	(revision 563854)
@@ -1,28 +1,28 @@
 # Created by: Emanuel Haupt <ehaupt@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	qwinff
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.2.1-22
 DISTVERSIONSUFFIX=	-g17e987e
 CATEGORIES=	multimedia
 
 MAINTAINER=	ehaupt@FreeBSD.org
 COMMENT=	Qt5 GUI Frontend for FFmpeg
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/COPYING.txt
 
 RUN_DEPENDS=	ffmpeg:multimedia/ffmpeg \
 		sox:audio/sox
 
-USES=		cmake:noninja qt:5
+USES=		cmake:noninja compiler:c++11-lang qt:5
 USE_GITHUB=	yes
 USE_QT=		core gui linguisttools network widgets buildtools_build \
 		qmake_build
 
 post-patch:
 	@${REINPLACE_CMD} -e "s|%%DATADIR%%|${DATADIR}|" \
 		${WRKSRC}/src/main.cpp ${WRKSRC}/src/ui/mainwindow.cpp
 
 .include <bsd.port.mk>