diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 8d59914f2057..061375ee6592 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -353,8 +353,8 @@ static int grow_stripes(raid5_conf_t *conf, int num)
 	struct kmem_cache *sc;
 	int devs = conf->raid_disks;
 
-	sprintf(conf->cache_name[0], "raid5/%s", mdname(conf->mddev));
-	sprintf(conf->cache_name[1], "raid5/%s-alt", mdname(conf->mddev));
+	sprintf(conf->cache_name[0], "raid5-%s", mdname(conf->mddev));
+	sprintf(conf->cache_name[1], "raid5-%s-alt", mdname(conf->mddev));
 	conf->active_name = 0;
 	sc = kmem_cache_create(conf->cache_name[conf->active_name],
 			       sizeof(struct stripe_head)+(devs-1)*sizeof(struct r5dev),