Index: head/devel/notcurses/Makefile
===================================================================
--- head/devel/notcurses/Makefile	(revision 534789)
+++ head/devel/notcurses/Makefile	(revision 534790)
@@ -1,30 +1,30 @@
 # $FreeBSD$
 
 PORTNAME=	notcurses
 DISTVERSIONPREFIX=	v
 DISTVERSION=	1.3.4-58
 DISTVERSIONSUFFIX=	-g006f430
 CATEGORIES=	devel
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	TUI library for modern terminal emulators
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 LIB_DEPENDS=	libavformat.so:multimedia/ffmpeg \
 		libqrcodegen.so:graphics/qr-code-generator
 
-USES=		cmake localbase ncurses:port pkgconfig python:run shebangfix
+USES=		cmake compiler:c++17-lang localbase ncurses:port pkgconfig python:run shebangfix
 SHEBANG_FILES=	src/pydemo/notcurses-pydemo
 USE_GITHUB=	yes
 GH_ACCOUNT=	dankamongmen
 USE_LDCONFIG=	yes
 
 CMAKE_OFF=	USE_PANDOC USE_TESTS USE_PYTHON
 
 OPTIONS_DEFINE=	DOCS
 
 PORTDOCS=	*
 
 .include <bsd.port.mk>