diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index ebcdb6025be37a15c11d91538c8350001dbf973c..b1ebd503eb5d2230beea5fb0ca81b7bc68bf79f6 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1771,7 +1771,6 @@ static int nbd_dev_add(int index)
 	struct gendisk *disk;
 	struct request_queue *q;
 	int err = -ENOMEM;
-	int first_minor = index << part_shift;
 
 	nbd = kzalloc(sizeof(struct nbd_device), GFP_KERNEL);
 	if (!nbd)
@@ -1835,7 +1834,7 @@ static int nbd_dev_add(int index)
 	refcount_set(&nbd->refs, 1);
 	INIT_LIST_HEAD(&nbd->list);
 	disk->major = NBD_MAJOR;
-	disk->first_minor = first_minor;
+	disk->first_minor = index << part_shift;
 	disk->fops = &nbd_fops;
 	disk->private_data = nbd;
 	sprintf(disk->disk_name, "nbd%d", index);