diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c
index 1ee3918..e937fcf7 100644
--- a/drivers/block/mg_disk.c
+++ b/drivers/block/mg_disk.c
@@ -1015,7 +1015,7 @@
 probe_err_6:
 	blk_cleanup_queue(host->breq);
 probe_err_5:
-	unregister_blkdev(MG_DISK_MAJ, MG_DISK_NAME);
+	unregister_blkdev(host->major, MG_DISK_NAME);
 probe_err_4:
 	if (!prv_data->use_polling)
 		free_irq(host->irq, host);