Index: head/devel/lua-cjson/Makefile
===================================================================
--- head/devel/lua-cjson/Makefile	(revision 513315)
+++ head/devel/lua-cjson/Makefile	(revision 513316)
@@ -1,27 +1,27 @@
 # Created by: osa
 # $FreeBSD$
 
 PORTNAME=	cjson
 PORTVERSION=	2.1.0
 CATEGORIES=	devel
 MASTER_SITES=	http://www.kyne.com.au/~mark/software/download/
 PKGNAMEPREFIX=	${LUA_PKGNAMEPREFIX}
 DISTNAME=	lua-cjson-${PORTVERSION}
 
 MAINTAINER=	osa@FreeBSD.org
-COMMENT=	Fast JSON parsing and encoding support for Lua
+COMMENT?=	Fast JSON parsing and encoding support for Lua
 
 LICENSE=	MIT
 
-USES=		lua
+USES?=		lua
 
 MAKE_ARGS=	LUA_VERSION=${LUA_VER}
 
 PLIST_FILES=	${LUA_MODLIBDIR}/cjson.so
 
 post-patch:
 	@${REINPLACE_CMD} '16,18d; \
 		21s|^\(LUA_INCLUDE.*\)\(PREFIX\)\(.*\)|\1LOCALBASE\3/lua${LUA_VER_STR}|' \
 		${WRKSRC}/Makefile
 
 .include <bsd.port.mk>