diff --git a/net/can/j1939/transport.c b/net/can/j1939/transport.c
index fe000ea757ea..06183d6f4fb7 100644
--- a/net/can/j1939/transport.c
+++ b/net/can/j1939/transport.c
@@ -1432,7 +1432,7 @@ j1939_session *j1939_session_fresh_new(struct j1939_priv *priv,
 	skcb = j1939_skb_to_cb(skb);
 	memcpy(skcb, rel_skcb, sizeof(*skcb));
 
-	session = j1939_session_new(priv, skb, skb->len);
+	session = j1939_session_new(priv, skb, size);
 	if (!session) {
 		kfree_skb(skb);
 		return NULL;