Index: head/graphics/pencil2d/Makefile
===================================================================
--- head/graphics/pencil2d/Makefile	(revision 490105)
+++ head/graphics/pencil2d/Makefile	(revision 490106)
@@ -1,31 +1,32 @@
 # $FreeBSD$
 
 PORTNAME=	pencil2d
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.6.2-63
 DISTVERSIONSUFFIX=	-gd05fbae0
 PORTREVISION=	1
 CATEGORIES=	graphics math
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Easy and intuitive tool to make 2D hand-drawn animations
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/LICENSE.TXT
 
 RUN_DEPENDS=	ffmpeg:multimedia/ffmpeg
 
-USES=		desktop-file-utils gl gmake qmake qt:5 shared-mime-info
+USES=		compiler:c++11-lang desktop-file-utils gl gmake qmake qt:5 \
+		shared-mime-info
 USE_GITHUB=	yes
 USE_QT=		core gui multimedia network svg widgets xml buildtools_build
 USE_GL=		gl
 GH_PROJECT=	pencil
 
 PLIST_FILES=	bin/pencil2d \
 		share/applications/pencil2d.desktop \
 		share/bash-completion/completions/pencil2d \
 		share/icons/hicolor/256x256/apps/pencil2d.png \
 		share/mime/packages/pencil2d.xml \
 		share/zsh/site-functions/_pencil2d
 
 .include <bsd.port.mk>