Index: uspace/drv/block/virtio-blk/virtio-blk.c
===================================================================
--- uspace/drv/block/virtio-blk/virtio-blk.c	(revision 60744cba3754acca8b3f05999d839bd617742de8)
+++ uspace/drv/block/virtio-blk/virtio-blk.c	(revision 8cdf360b980d6b74b10bbef344f15954d543d30e)
@@ -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;