diff --git a/usr.bin/mail/USD.doc/Makefile b/usr.bin/mail/USD.doc/Makefile
index f7353c271515..4c96c7e0df98 100644
--- a/usr.bin/mail/USD.doc/Makefile
+++ b/usr.bin/mail/USD.doc/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.2 1997/01/09 20:20:42 tls Exp $
+#	$NetBSD: Makefile,v 1.3 1997/12/21 15:48:30 christos Exp $
 #	from: @(#)Makefile	8.1 (Berkeley) 6/8/93
 
 DIR=	usd/07.mail
@@ -7,6 +7,6 @@ SRCS=	mail0.nr mail1.nr mail2.nr mail3.nr mail4.nr mail5.nr mail6.nr \
 MACROS=	-me
 
 paper.ps: ${SRCS}
-	${TBL} ${SRCS} | ${ROFF} > ${.TARGET}
+	${SOELIM} -I${.CURDIR} ${.ALLSRC} | ${TBL} | ${ROFF} > ${.TARGET}
 
 .include <bsd.doc.mk>