diff --git a/eBones/include/Makefile b/eBones/include/Makefile
index 8b46c65e852..ff43b54d031 100644
--- a/eBones/include/Makefile
+++ b/eBones/include/Makefile
@@ -1,7 +1,7 @@
 #	from: @(#)Makefile	5.1 (Berkeley) 6/25/90
-#	$Id: Makefile,v 1.3 1994/09/09 21:43:35 g89r4222 Exp $
+#	$Id: Makefile,v 1.1.1.1 1994/09/30 14:49:53 csgr Exp $
 
-FILES=	des.h kadm.h kparse.h krb.h krb_db.h
+FILES=	des.h kparse.h krb.h krb_db.h
 
 # mit-copyright.h kadm_err.h krb_err.h
 
@@ -11,7 +11,9 @@ NOMAN=	noman
 all include clean cleandir depend lint tags:
 
 beforeinstall:
-	install -c -o ${BINOWN} -g ${BINGRP} -m 444 \
-	    ${FILES} ${DESTDIR}/usr/include/kerberosIV
+	-cd ${.CURDIR}; for file in ${FILES}; do \
+		cmp -s $$file ${DESTDIR}/usr/include/kerberosIV/$$file || \
+		install -c -o ${BINOWN} -g ${BINGRP} -m 444 $$file \
+		${DESTDIR}/usr/include/kerberosIV; done
 
 .include <bsd.prog.mk>