diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c
index e1aef25..cd51492 100644
--- a/drivers/net/xen-netback/xenbus.c
+++ b/drivers/net/xen-netback/xenbus.c
@@ -977,8 +977,8 @@ static void connect(struct backend_info *be)
 	}
 
 	/* Use the number of queues requested by the frontend */
-	be->vif->queues = vzalloc(requested_num_queues *
-				  sizeof(struct xenvif_queue));
+	be->vif->queues = vzalloc(array_size(requested_num_queues,
+					     sizeof(struct xenvif_queue)));
 	if (!be->vif->queues) {
 		xenbus_dev_fatal(dev, -ENOMEM,
 				 "allocating queues");