diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index a5dca6affcb..776fc08aff0 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1771,7 +1771,7 @@ int drbd_send(struct drbd_tconn *tconn, struct socket *sock,
  * do we need to block DRBD_SIG if sock == &meta.socket ??
  * otherwise wake_asender() might interrupt some send_*Ack !
  */
-		rv = kernel_sendmsg(sock, &msg, &iov, 1, size);
+		rv = kernel_sendmsg(sock, &msg, &iov, 1, iov.iov_len);
 		if (rv == -EAGAIN) {
 			if (we_should_drop_the_connection(tconn, sock))
 				break;