Index: head/net/radsecproxy/Makefile
===================================================================
--- head/net/radsecproxy/Makefile	(revision 559581)
+++ head/net/radsecproxy/Makefile	(revision 559582)
@@ -1,30 +1,30 @@
 # Created by: Honza Betik
 # $FreeBSD$
 
 PORTNAME=	radsecproxy
 DISTVERSION=	1.8.2
 CATEGORIES=	net
 MASTER_SITES=	https://github.com/${PORTNAME}/${PORTNAME}/releases/download/${DISTVERSION}/
 
 MAINTAINER=	neel@neelc.org
 COMMENT=	Generic RADIUS proxy
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 LIB_DEPENDS=	libnettle.so:security/nettle
 
-USES=		cpe localbase:ldflags ssl
+USES=		compiler:c11 cpe localbase:ldflags ssl
 USE_RC_SUBR=	${PORTNAME}
 CPE_VENDOR=	uninett
 
 GNU_CONFIGURE=	yes
 
 CONFIGURE_ARGS=	--with-ssl=${OPENSSLBASE}
 
 post-install:
 	${MAKE} install-man -C ${WRKSRC} ${MAKE_ARGS}
 	${INSTALL_DATA} ${WRKSRC}/radsecproxy.conf-example \
 		${STAGEDIR}${PREFIX}/etc
 
 .include <bsd.port.mk>