diff --git a/chinese/c2t/Makefile b/chinese/c2t/Makefile
index f39b83ce7475..fc3e01b36cc8 100644
--- a/chinese/c2t/Makefile
+++ b/chinese/c2t/Makefile
@@ -1,22 +1,24 @@
 # Created by: David O'Brien (obrien@FreeBSD.org)
 
 PORTNAME=	c2t
 PORTVERSION=	1.0
 CATEGORIES=	chinese
 MASTER_SITES=	ftp://ftp.cuhk.hk/pub/chinese/ifcss/software/unix/convert/:file  \
 		ftp://ftp.cuhk.hk/pub/chinese/ifcss/software/x-win/cxterm/dict/gb/:dict
 DISTFILES=	c2t.tar.gz:file TONEPY.tit:dict
 
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Translates GB/Big5 encoding to tone pinyin
 
 NO_WRKSUBDIR=	yes
 EXTRACT_ONLY=	c2t.tar.gz
 
+CFLAGS+=	-Dregister=
+
 do-install:
 	@${MKDIR} ${STAGEDIR}${PREFIX}/share/chinese/gb
 	${INSTALL_PROGRAM} ${WRKSRC}/c2t ${STAGEDIR}${PREFIX}/bin
 	${INSTALL_DATA} ${DISTDIR}/TONEPY.tit ${STAGEDIR}${PREFIX}/share/chinese/gb
 	${INSTALL_MAN} ${WRKSRC}/${PORTNAME}.1 ${STAGEDIR}${PREFIX}/man/man1
 
 .include <bsd.port.mk>