diff --git a/x11-toolkits/viewklass/Makefile b/x11-toolkits/viewklass/Makefile
index 1518600000fb..6a0b6da1554b 100644
--- a/x11-toolkits/viewklass/Makefile
+++ b/x11-toolkits/viewklass/Makefile
@@ -1,24 +1,26 @@
 PORTNAME=	viewklass
 PORTVERSION=	0.7.2
 PORTREVISION=	1
 CATEGORIES=	x11-toolkits
 MASTER_SITES=	SF/${PORTNAME}/${PORTNAME}/ViewKlass-${PORTVERSION}
 DISTNAME=	ViewKlass-${PORTVERSION}
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	C++ Framework for Motif
 WWW=		http://viewklass.sourceforge.net/
 
 LICENSE=	LGPL20+
 
-GNU_CONFIGURE=	yes
 USES=		imake:env motif
+USE_CXXSTD=	c++14
+
+GNU_CONFIGURE=	yes
 
 post-patch:
 	@${REINPLACE_CMD} -e \
 		'/^CFLAGS=/s|-g|${CFLAGS}| ; \
 		 /^CXXFLAGS=/s|-g|${CXXFLAGS}| ; \
 		 s| $$(exec_prefix)| $$(DESTDIR)$$(exec_prefix)| ; \
 		 s| $$(prefix)| $$(DESTDIR)$$(prefix)|' ${WRKSRC}/Makefile.in
 
 .include <bsd.port.mk>