diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index ea2c17c66dfb66ef41ab8e8052448c0716ad0b2f..e93899cc6f60be0bd13b45dde3b8d697b7a733c8 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -656,6 +656,7 @@ static int virtblk_probe(struct virtio_device *vdev)
 	vblk->disk->private_data = vblk;
 	vblk->disk->fops = &virtblk_fops;
 	vblk->disk->driverfs_dev = &vdev->dev;
+	vblk->disk->flags |= GENHD_FL_EXT_DEVT;
 	vblk->index = index;
 
 	/* configure queue flush support */