--- Makefile.orig	2013-06-02 14:07:08 UTC
+++ Makefile
@@ -41,7 +41,7 @@ BINDIR=		$(PREFIX)/sbin
 .if (${OPSYS} == "NetBSD")
 MANDIR=		$(PREFIX)/man
 .else
-MANDIR=		$(PREFIX)/man/man
+MANDIR=		$(PREFIX)/share/man/man
 .endif
 MAN=		dtcps.8 dtcpc.8 dtcpauth.8
 
@@ -94,11 +94,11 @@ dtcpauth.8:	dtcpauth.8.in
 
 realinstall:
 	${INSTALL} ${COPY} -o ${BINOWN} -g ${BINGRP} -m 555 dtcps \
-		${BINDIR}/dtcps
+		${DESTDIR}${BINDIR}/dtcps
 	${INSTALL} ${COPY} -o ${BINOWN} -g ${BINGRP} -m 555 dtcpc \
-		${BINDIR}/dtcpc
+		${DESTDIR}${BINDIR}/dtcpc
 	${INSTALL} ${COPY} -o ${BINOWN} -g ${BINGRP} -m 555 dtcpauth \
-		${BINDIR}/dtcpauth
+		${DESTDIR}${BINDIR}/dtcpauth
 
 dist:
 	@data=`date +%Y%m%d`; \