Index: head/multimedia/libdvdnav/Makefile
===================================================================
--- head/multimedia/libdvdnav/Makefile	(revision 530637)
+++ head/multimedia/libdvdnav/Makefile	(revision 530638)
@@ -1,28 +1,29 @@
 # Created by: MANTANI Nobutaka <nobutaka@nobutaka.com>
 # $FreeBSD$
 
 PORTNAME=	libdvdnav
 PORTVERSION=	6.1.0
 CATEGORIES=	multimedia
 MASTER_SITES=	http://download.videolan.org/pub/videolan/libdvdnav/${PORTVERSION}/ \
 		http://dvdnav.mplayerhq.hu/releases/ \
 		http://contribs.martymac.org/FreeBSD-ports/distfiles/ \
 		LOCAL/martymac
 
 MAINTAINER=	martymac@FreeBSD.org
 COMMENT=	Videolan version of the libdvdnav project
 
 LICENSE=	GPLv2
 
 LIB_DEPENDS=	libdvdread.so:multimedia/libdvdread
 
 GNU_CONFIGURE=	yes
 INSTALL_TARGET=	install-strip
 USES=		tar:bz2 gmake libtool pathfix pkgconfig
+USE_CSTD=	c99
 USE_LDCONFIG=	yes
 
 PORTDOCS=	AUTHORS COPYING ChangeLog README TODO
 
 OPTIONS_DEFINE=	DOCS
 
 .include <bsd.port.mk>