diff --git a/japanese/celrw/Makefile b/japanese/celrw/Makefile
index 13100242cb0d..97f80d0a9ea2 100644
--- a/japanese/celrw/Makefile
+++ b/japanese/celrw/Makefile
@@ -1,31 +1,37 @@
 PORTNAME=	celrw
 PORTVERSION=	0.16
 CATEGORIES=	japanese
 MASTER_SITES=	http://www.nurs.or.jp/~kurati/celrw/
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Cellular phone-number read/write tool (in Japan only)
 WWW=		http://www.nurs.or.jp/~kurati/celrw/
 
 USES=	tar:bzip2
 GNU_CONFIGURE=	yes
 MAKE_ARGS=	VERSION="${PORTVERSION}" OPTFLAGS="${CFLAGS}"
 ALL_TARGET=	${PORTNAME}
 
 PORTDOCS=	README
 PLIST_FILES=	bin/celrw
 
 OPTIONS_DEFINE=	DOCS
 
+.include <bsd.port.pre.mk>
+
+.if ${OPSYS} == FreeBSD && ( ${OSVERSION} >= 1400079 || ( ${OSVERSION} >= 1302505 && ${OSVERSION} < 1400000 ))
+CFLAGS+=	-Wno-error=int-conversion
+.endif
+
 post-extract:
 .for file in config.guess config.sub install.sh
 	@${RM} ${WRKSRC}/${file}
 	@${TOUCH} ${WRKSRC}/${file}
 .endfor
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/celrw ${STAGEDIR}${PREFIX}/bin
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	${INSTALL_DATA} ${WRKSRC}/README ${STAGEDIR}${DOCSDIR}
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>