diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 7114bdff5958..f44c5429b4f0 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -6091,7 +6091,7 @@ static int l2cap_data_rcv(struct l2cap_chan *chan, struct sk_buff *skb)
 		       control->super);
 
 		if (len != 0) {
-			BT_ERR("%d", len);
+			BT_ERR("Trailing bytes: %d in sframe", len);
 			l2cap_send_disconn_req(chan->conn, chan, ECONNRESET);
 			goto drop;
 		}