diff --git a/subsys/net/ip/tcp.c b/subsys/net/ip/tcp.c
index 759a600b46c..8941ec51728 100644
--- a/subsys/net/ip/tcp.c
+++ b/subsys/net/ip/tcp.c
@@ -1006,10 +1006,9 @@ static int tcp_unsent_len(struct tcp *conn)
 static int tcp_send_data(struct tcp *conn)
 {
 	int ret = 0;
-	int pos, len;
+	int len;
 	struct net_pkt *pkt;
 
-	pos = conn->unacked_len;
 	len = MIN3(conn->send_data_total - conn->unacked_len,
 		   conn->send_win - conn->unacked_len,
 		   conn_mss(conn));
@@ -1026,7 +1025,7 @@ static int tcp_send_data(struct tcp *conn)
 		goto out;
 	}
 
-	ret = tcp_pkt_peek(pkt, conn->send_data, pos, len);
+	ret = tcp_pkt_peek(pkt, conn->send_data, conn->unacked_len, len);
 	if (ret < 0) {
 		tcp_pkt_unref(pkt);
 		ret = -ENOBUFS;