diff --git a/math/mbasecalc/Makefile b/math/mbasecalc/Makefile
index 011d564a6f43..3e0d243f8750 100644
--- a/math/mbasecalc/Makefile
+++ b/math/mbasecalc/Makefile
@@ -1,27 +1,29 @@
 PORTNAME=	mbasecalc
 PORTVERSION=	1.1
 PORTREVISION=	8
 CATEGORIES=	math
 MASTER_SITES=	http://www.muquit.com/muquit/software/mbasecalc/
 DISTNAME=	${PORTNAME}
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Simple calculator program inspired by basecalc
 WWW=		https://www.muquit.com/muquit/software/mbasecalc/mbasecalc.html
 
 LICENSE=	GPLv2
 
 LIB_DEPENDS=	libfltk.so:x11-toolkits/fltk
 
+USE_CXXSTD=	c++14
+
 MAKE_ARGS=	CC="${CC}" CXX="${CXX}" CFLAGS="${CPPFLAGS} ${CXXFLAGS}" \
 		LIBS="${LDFLAGS}"
 
 CPPFLAGS+=	$$(fltk-config --cflags) -DSYS_UNIX
 LDFLAGS+=	$$(fltk-config --ldflags)
 
 PLIST_FILES=	bin/mbasecalc
 
 do-install:
 	(cd ${WRKSRC} && ${INSTALL_PROGRAM} mbasecalc ${STAGEDIR}${PREFIX}/bin)
 
 .include <bsd.port.mk>