diff --git a/devel/systemc/Makefile b/devel/systemc/Makefile
index c42abcda23dd..842b4fac13b3 100644
--- a/devel/systemc/Makefile
+++ b/devel/systemc/Makefile
@@ -1,31 +1,33 @@
 PORTNAME=	systemc
 DISTVERSION=	2.3.4
+PORTREVISION=	1
 DISTVERSIONSUFFIX=	_pub_rev_20190614
 CATEGORIES=	devel
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	C++ classes and macros for describing complex hardware systems
 WWW=		https://www.accellera.org/downloads/standards/systemc
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 ONLY_FOR_ARCHS=		aarch64 amd64 i386
 ONLY_FOR_ARCHS_REASON=	configure: error: sorry...architecture not supported
 
-USES=		gmake libtool
+USES=		compiler:c++17-lang gmake libtool
+USE_CXXSTD=	c++17 # needs to match that of cad/verilator, to avoid mismatches like https://github.com/verilator/verilator/issues/4499
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	accellera-official
 
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--with-unix-layout=yes
 
 INSTALL_TARGET=	install-strip
 
 OPTIONS_DEFINE=	DOCS
 
 PORTDOCS=	*
 
 .include <bsd.port.mk>