--- Makefile.in
+++ Makefile.in
@@ -111,11 +111,11 @@
 
 installthis:
 	-mkdir -p $(DESTDIR)$(BINDIR)
-	$(INSTALL) -m 555 -o bin -g bin thttpd $(DESTDIR)$(SBINDIR)
+	$(INSTALL) -m 555 thttpd $(DESTDIR)$(SBINDIR)
 
 install-man:
 	-mkdir -p $(DESTDIR)$(MANDIR)/man8
-	$(INSTALL) -m 444 -o bin -g bin thttpd.8 $(DESTDIR)$(MANDIR)/man8
+	$(INSTALL) -m 444 thttpd.8 $(DESTDIR)$(MANDIR)/man8
 
 installsubdirs:
 	for i in $(SUBDIRS) ; do ( \
--- extras/Makefile.in
+++ extras/Makefile.in
@@ -69,7 +69,7 @@
 install:	all
 	rm -f $(SBINDIR)/makeweb $(SBINDIR)/htpasswd $(SBINDIR)/syslogtocern
 	cp makeweb $(BINDIR)/makeweb
-	chgrp $(WEBGROUP) $(BINDIR)/makeweb
+	-chgrp $(WEBGROUP) $(BINDIR)/makeweb
 	chmod 2755 $(BINDIR)/makeweb
 	cp htpasswd $(BINDIR)/htpasswd
 	cp syslogtocern $(SBINDIR)/syslogtocern