diff --git a/security/ipv6toolkit/Makefile b/security/ipv6toolkit/Makefile
index e2969e85033d..1c884a432a8e 100644
--- a/security/ipv6toolkit/Makefile
+++ b/security/ipv6toolkit/Makefile
@@ -1,48 +1,50 @@
 PORTNAME=	ipv6toolkit
 PORTVERSION=	2.0
 DISTVERSIONPREFIX=	v
 CATEGORIES=	security
 MASTER_SITES=	http://www.si6networks.com/tools/ipv6toolkit/
 
 MAINTAINER=	hrs@FreeBSD.org
 COMMENT=	Set of IPv6 security assessment tools
 
 LICENSE=	GPLv3+
 LICENSE_FILE=	${WRKSRC}/LICENSE.TXT
 
 USES=		shebangfix uidfix
 SHEBANG_FILES=	tools/blackhole6 tools/script6
 MAKE_ENV=	DATADIR=${DATADIR} WRKSRC=${WRKSRC}
 SUB_FILES=	BSDMakefile Makefile Makefile.lib
 MAKEFILE=	BSDMakefile
 PORTDOCS=	README.TXT CHANGES.TXT CREDITS.TXT
 
+CFLAGS_riscv64=	-fPIC
+
 PROGDIRS=	addr6 flow6 frag6 icmp6 jumbo6 na6 ni6 ns6 path6 ra6 rd6 rs6 \
 		scan6 tcp6 udp6
 LIBDIRS=	libipv6
 
 OPTIONS_DEFINE=	DOCS
 
 post-extract:
 	@cd ${WRKSRC} && ${MKDIR} ${PROGDIRS} ${LIBDIRS}
 
 pre-build:
 	${INSTALL_DATA} ${WRKDIR}/BSDMakefile ${WRKSRC}
 	for D in ${PROGDIRS}; do \
 		${INSTALL_DATA} ${WRKDIR}/Makefile ${WRKSRC}/$$D; \
 	done
 	for D in ${LIBDIRS}; do \
 		${INSTALL_DATA} ${WRKDIR}/Makefile.lib ${WRKSRC}/$$D/Makefile; \
 	done
 
 post-install:
 	${INSTALL_SCRIPT} ${WRKSRC}/tools/blackhole6 ${WRKSRC}/tools/script6 \
 	    ${STAGEDIR}${PREFIX}/sbin
 
 pre-install-DOCS-on:
 	${MKDIR} ${STAGEDIR}${DOCSDIR}
 
 post-install-DOCS-on:
 	cd ${WRKSRC} && ${INSTALL_DATA} ${PORTDOCS} ${STAGEDIR}${DOCSDIR}
 
 .include <bsd.port.mk>