diff --git a/mail/qmail-conf/Makefile b/mail/qmail-conf/Makefile
index b0adf41bed08..060c0ebd88e0 100644
--- a/mail/qmail-conf/Makefile
+++ b/mail/qmail-conf/Makefile
@@ -1,59 +1,60 @@
 PORTNAME=	qmail-conf
 PORTVERSION=	0.60
 PORTREVISION=	4
 CATEGORIES=	mail
 MASTER_SITES=	LOCAL/oliver:conf \
 		http://cr.yp.to/djbdns/:djbdns
 DISTFILES=	${DISTNAME}.tar.gz:conf \
 		${DJBDNS_DIST}:djbdns
 EXTRACT_ONLY=	${DISTNAME}${EXTRACT_SUFX}
 
 MAINTAINER=	oliver@FreeBSD.org
 COMMENT=	Configure various qmail services to run under daemontools
 WWW=		http://www.din.or.jp/~ushijima/qmail-conf.html
 
 # Converted from LEGAL_TEXT
 LICENSE=	djb
 LICENSE_NAME=	djb
 LICENSE_TEXT=	No license -- see http://cr.yp.to/softwarelaw.html
 LICENSE_PERMS=	dist-mirror dist-sell pkg-mirror pkg-sell auto-accept
 
 USES=		qmail:run
 
 ALL_TARGET=	prog
 INSTALL_TARGET=	setup check
 
 PREFIX?=	${QMAIL_PREFIX}
 NO_PREFIX_RMDIR=yes
 
 NO_MTREE=	yes
 
 DJBDNS_VER=	1.05
 DJBDNS_NAME=	djbdns-${DJBDNS_VER}
 DJBDNS_DIST=	${DJBDNS_NAME}${EXTRACT_SUFX}
 
 post-extract:
 		@(cd ${WRKSRC} && ${EXTRACT_CMD} ${EXTRACT_BEFORE_ARGS} ${DISTDIR}/${DJBDNS_DIST} ${EXTRACT_AFTER_ARGS})
 
 post-patch:
 		@${ECHO_CMD} "${QMAIL_PREFIX}" > ${WRKSRC}/conf-qmail
 		@${ECHO_CMD} "${CC} ${CFLAGS}" > ${WRKSRC}/conf-cc
 		@${ECHO_CMD} "${CC} ${CFLAGS} ${STRIP}" > ${WRKSRC}/conf-ld
 		@${ECHO_CMD} "${LOCALBASE}" > ${WRKSRC}/conf-ucspi-tcp
+		@${REINPLACE_CMD} "s|extern int errno;|#include <errno.h>|" ${WRKSRC}/${DJBDNS_NAME}/error.h
 
 pre-build:
 		@(cd ${WRKSRC} && ${SETENV} ${MAKE_ENV} ${MAKE_CMD} \
 		    djbdns=${DJBDNS_NAME} -f Makefile.ini)
 
 # Do a dance to stage and keep out of resulting binaries (see r346769
 # and r349241)
 post-build:
 	@${ECHO_MSG} "===> Rebuilding DJB installer to respect STAGEDIR"
 	@${MV} -f ${WRKSRC}/conf-qmail ${WRKSRC}/conf-qmail.sav
 	@${ECHO_CMD} "${STAGEDIR}${QMAIL_PREFIX}" > ${WRKSRC}/conf-qmail
 	@cd ${WRKSRC} ; ${RM} install instcheck install.o instcheck.o hier.o auto_qmail.o auto_qmail.c
 	@cd ${WRKSRC} ; ${DO_MAKE_BUILD} install instcheck
 	@${TOUCH} ${WRKSRC}/*-conf
 	@${MV} -f ${WRKSRC}/conf-qmail.sav ${WRKSRC}/conf-qmail
 
 .include <bsd.port.mk>