diff --git a/Makefile b/Makefile
index e7bcc0c..f73ae77 100644
--- a/Makefile
+++ b/Makefile
@@ -28,7 +28,7 @@
 	rm -f ${OBJS} ${CODEOBJS} ${GENOBJS} ${TARGET} *~ core cmd5apoppw
 
 install:
-	install -m 4750 -u root -g ${CGROUP} cmd5apoppw ${VPREFIX}/bin
+	install -m 4750 -o root -g ${CGROUP} cmd5apoppw ${VPREFIX}/bin
 	cp apoppasswd ${PREFIX}/bin
 	cp cmd5apoppw.8 ${PREFIX}/share/man/man8/
 	cp deapop ${PREFIX}/sbin