Index: head/net/libiscsi/Makefile
===================================================================
--- head/net/libiscsi/Makefile	(revision 538071)
+++ head/net/libiscsi/Makefile	(revision 538072)
@@ -1,24 +1,24 @@
 # Created by: M. Birgmeier
 # $FreeBSD$
 
 PORTNAME=	libiscsi
 DISTVERSION=	1.19.0
 CATEGORIES=	net
 
 MAINTAINER=	d8zNeCFG@aon.at
 COMMENT=	Client-side library to implement the iSCSI protocol
 
 LICENSE=		LGPL21+ GPLv2+
 LICENSE_COMB=		multi
 LICENSE_FILE_LGPL21+  =	${WRKSRC}/LICENCE-LGPL-2.1.txt
 LICENSE_FILE_GPLv2+   =	${WRKSRC}/LICENCE-GPL-2.txt
 
-USES=		autoreconf libtool pathfix
+USES=		autoreconf compiler:c11 libtool pathfix
 USE_GITHUB=	yes
 USE_LDCONFIG=	yes
 
 GH_ACCOUNT=	sahlberg
 
 GNU_CONFIGURE=	yes
 
 .include <bsd.port.mk>