rksh is wrong, here

src/etc/shells

@@ -1,8 +1,7 @@
-#	$OpenBSD: shells,v 1.4 1996/08/14 08:47:20 downsj Exp $
+#	$OpenBSD: shells,v 1.5 1997/05/28 21:42:20 deraadt Exp $
 # List of acceptable shells for chpass(1).
 # Ftpd will not allow users to connect who are not using
 # one of these shells.
 /bin/sh
 /bin/csh
 /bin/ksh
-/bin/rksh