diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index c9f9cecca5270f129217a691a16115ebbaddbf92..ca27f3a41536f35d4d608f9f0929b50105658f4d 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1116,7 +1116,9 @@ int l2cap_ertm_send(struct sock *sk)
 		bt_cb(skb)->tx_seq = pi->next_tx_seq;
 		pi->next_tx_seq = (pi->next_tx_seq + 1) % 64;
 
-		pi->unacked_frames++;
+		if (bt_cb(skb)->retries == 1)
+			pi->unacked_frames++;
+
 		pi->frames_sent++;
 
 		if (skb_queue_is_last(TX_QUEUE(sk), skb))