Index: head/math/wxmaxima/Makefile
===================================================================
--- head/math/wxmaxima/Makefile	(revision 543898)
+++ head/math/wxmaxima/Makefile	(revision 543899)
@@ -1,35 +1,35 @@
 # Created by: Nicola Vitale <nivit@email.it>
 # $FreeBSD$
 
 PORTNAME=	wxmaxima
 PORTVERSION=	20.04.0
 PORTREVISION=	1
 DISTVERSIONPREFIX=	Version-
 CATEGORIES=	math
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	WxWidgets GUI for the computer algebra system maxima
 
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 RUN_DEPENDS=	maxima:math/maxima
 
-USES=		cmake desktop-file-utils shared-mime-info
+USES=		cmake compiler:c++11-lang desktop-file-utils shared-mime-info
 USE_WX=		3.0
 USE_GITHUB=	yes
 GH_ACCOUNT=	wxMaxima-Developers
 
 PLIST_SUB=	DESKTOPDIR=${DESKTOPDIR:S,${PREFIX}/,,}
 WX_COMPS=	wx
 WX_CONF_ARGS=	absolute
 
 PORTDATA=	COPYING README README.md
 
 OPTIONS_DEFINE=	NLS
 OPTIONS_SUB=	yes
 
 NLS_EXTRA_PATCHES_OFF=	${PATCHDIR}/extra-patch-CMakeLists.txt
 NLS_USES=	gettext
 
 .include <bsd.port.mk>