diff --git a/[refs] b/[refs]
index 7855e976c14c..933f1536c170 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 876fbba1db4a377f050a2bb49b474c7527b2995d
+refs/heads/master: 8232480944d173378082ebb2cac8a3207c08cf31
diff --git a/trunk/drivers/md/dm-raid.c b/trunk/drivers/md/dm-raid.c
index a002dd85db1e..86df8b2cf927 100644
--- a/trunk/drivers/md/dm-raid.c
+++ b/trunk/drivers/md/dm-raid.c
@@ -449,7 +449,7 @@ static int parse_raid_params(struct raid_set *rs, char **argv,
 				rs->ti->error = "write_mostly option is only valid for RAID1";
 				return -EINVAL;
 			}
-			if (value > rs->md.raid_disks) {
+			if (value >= rs->md.raid_disks) {
 				rs->ti->error = "Invalid write_mostly drive index given";
 				return -EINVAL;
 			}