diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 5441083..7da6432 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -4675,7 +4675,8 @@
 			l2cap_conn_unreliable(conn, ECOMM);
 		}
 
-		if (skb->len < 2) {
+		/* Start fragment always begin with Basic L2CAP header */
+		if (skb->len < L2CAP_HDR_SIZE) {
 			BT_ERR("Frame is too short (len %d)", skb->len);
 			l2cap_conn_unreliable(conn, ECOMM);
 			goto drop;