diff --git a/textproc/txt2man/Makefile b/textproc/txt2man/Makefile
index a23de9848e0d..3302ce30135c 100644
--- a/textproc/txt2man/Makefile
+++ b/textproc/txt2man/Makefile
@@ -14,10 +14,8 @@ MASTER_SITES=	http://mvertes.free.fr/download/
 MAINTAINER=	ijliao@FreeBSD.org
 
 ALL_TARGET=	txt2man.1
+INSTALL_TARGET=	install prefix=${PREFIX}
 
 MAN1=	txt2man.1
 
-post-patch:
-	@${PERL} -pi -e "s,/usr/local,${PREFIX},g" ${WRKSRC}/Makefile
-
 .include <bsd.port.mk>