diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 7701528f1167..fdccd62ccca8 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -7274,7 +7274,7 @@ static void l2cap_ecred_reconfigure(struct l2cap_chan *chan)
 	chan->ident = l2cap_get_ident(conn);
 
 	l2cap_send_cmd(conn, chan->ident, L2CAP_ECRED_RECONF_REQ,
-		       sizeof(pdu), &pdu);
+		       struct_size(pdu, scid, 1), pdu);
 }
 
 int l2cap_chan_reconfigure(struct l2cap_chan *chan, __u16 mtu)