diff --git a/sys/kern/subr_diskslice.c b/sys/kern/subr_diskslice.c
index d02b6b29cfbe..83590e674d74 100644
--- a/sys/kern/subr_diskslice.c
+++ b/sys/kern/subr_diskslice.c
@@ -43,7 +43,7 @@
  *	from: wd.c,v 1.55 1994/10/22 01:57:12 phk Exp $
  *	from: @(#)ufs_disksubr.c	7.16 (Berkeley) 5/4/91
  *	from: ufs_disksubr.c,v 1.8 1994/06/07 01:21:39 phk Exp $
- *	$Id: subr_diskslice.c,v 1.57 1998/08/13 08:09:07 dfr Exp $
+ *	$Id: subr_diskslice.c,v 1.58 1998/08/23 20:16:34 phk Exp $
  */
 
 #include "opt_devfs.h"
@@ -464,7 +464,7 @@ dsioctl(dname, dev, cmd, data, flags, sspp, strat, setgeom)
 				     (u_long)openmask);
 		/* XXX why doesn't setdisklabel() check this? */
 		if (error == 0 && lp->d_partitions[RAW_PART].p_offset != 0)
-			error = EINVAL;
+			error = EXDEV;
 		if (error == 0) {
 			if (lp->d_secperunit > sp->ds_size)
 				error = ENOSPC;