Index: head/devel/libantlr4/Makefile
===================================================================
--- head/devel/libantlr4/Makefile	(revision 536716)
+++ head/devel/libantlr4/Makefile	(revision 536717)
@@ -1,24 +1,24 @@
 # Created by: Muhammad Moinur Rahman<5u623l20@gmail.com>
 # $FreeBSD$
 
 PORTNAME=	antlr4
 PORTVERSION=	4.8
 CATEGORIES=	devel
 MASTER_SITES=	http://www.antlr.org/download/
 PKGNAMEPREFIX=		lib
 DISTVERSIONPREFIX=	cpp-runtime-
 DISTVERSIONSUFFIX=	-source
 
 MAINTAINER=	fluffy@FreeBSD.org
 COMMENT=	ANother Tool for Language Recognition (C runtime)
 
 LICENSE=	BSD3CLAUSE
 
-USES=		cmake zip
+USES=		cmake compiler:c11 zip
 NO_WRKSUBDIR=	yes
 
 DOCSDIR=	${PREFIX}/share/doc/${PKGNAMEPREFIX}${PORTNAME}
 LIBVERSION=	4.8
 PLIST_SUB+=	LIBVERSION=${PORTVERSION}
 
 .include <bsd.port.mk>