diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index c2eea7dbc488..b7fee6e55f03 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -1493,10 +1493,10 @@ static void batadv_tp_ack_unordered(struct batadv_tp_receiver *tp_vars)
 		if (batadv_seq_before(tp_vars->last_recv, un->seqno))
 			break;
 
-		to_ack = un->seqno + un->len - tp_vars->last_recv;
+		to_ack = un->seqno + un->len;
 
-		if (batadv_seq_before(tp_vars->last_recv, un->seqno + un->len))
-			tp_vars->last_recv += to_ack;
+		if (batadv_seq_before(tp_vars->last_recv, to_ack))
+			tp_vars->last_recv = to_ack;
 
 		list_del(&un->list);
 		kfree(un);