Index: head/misc/openhantek/Makefile
===================================================================
--- head/misc/openhantek/Makefile	(revision 517238)
+++ head/misc/openhantek/Makefile	(revision 517239)
@@ -1,27 +1,27 @@
 # $FreeBSD$
 
 PORTNAME=	openhantek
 DISTVERSION=	g20190903
 CATEGORIES=	misc
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Digital Software Oscilloscope (DSO) software for Hantek oscilloscopes
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 LIB_DEPENDS=	libfftw3.so:math/fftw3
 
-USES=		cmake gl localbase qt:5
+USES=		cmake compiler:c++11-lang gl localbase qt:5
 USE_GITHUB=	yes
 GH_ACCOUNT=	OpenHantek
 GH_TAGNAME=	e7e0c7b
 USE_QT=		core gui opengl printsupport widgets buildtools_build qmake_build
 USE_GL=		gl glu
 
 PLIST_FILES=	bin/OpenHantek
 
 post-patch:
 	@${GREP} -rl "<libusb-1.0/libusb.h>" ${WRKSRC} | ${XARGS} ${REINPLACE_CMD} 's|<libusb-1.0/libusb.h>|<libusb.h>|'
 
 .include <bsd.port.mk>