Index: uspace/drv/block/virtio-blk/virtio-blk.c
===================================================================
--- uspace/drv/block/virtio-blk/virtio-blk.c	(revision 145d4e2e4ca85f3af81a944e3ba89efac45337a2)
+++ uspace/drv/block/virtio-blk/virtio-blk.c	(revision 56210a7aca94cc904bb253efade72fb9a4cc1a40)
@@ -365,5 +365,5 @@
 	}
 
-	vdev->queues = calloc(sizeof(virtq_t), num_queues);
+	vdev->queues = calloc(num_queues, sizeof(virtq_t));
 	if (!vdev->queues) {
 		rc = ENOMEM;