diff --git a/plugin/disk_format/disk_format40.c b/plugin/disk_format/disk_format40.c
index 41d7bbc..68b2662 100644
--- a/plugin/disk_format/disk_format40.c
+++ b/plugin/disk_format/disk_format40.c
@@ -372,11 +372,11 @@ static int try_init_format40(struct super_block *super,
 	reiser4_set_block_count(super, get_format40_block_count(sb_copy));
 	sbinfo->blocks_free = get_format40_free_blocks(sb_copy);
 	sbinfo->version = get_format40_version(sb_copy);
-	kfree(sb_copy);
 
 	if (update_backup_version(sb_copy))
 		printk("reiser4: %s: use 'fsck.reiser4 --fix' "
 		       "to complete disk format upgrade.\n", super->s_id);
+	kfree(sb_copy);
 
 	sbinfo->fsuid = 0;
 	sbinfo->fs_flags |= (1 << REISER4_ADG);	/* hard links for directories