diff --git a/net/can/isotp.c b/net/can/isotp.c
index 009d5216f3ea..ef72e5344789 100644
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -813,10 +813,12 @@ isotp_tx_burst:
 		can_skb_set_owner(skb, sk);
 
 		can_send_ret = can_send(skb, 1);
-		if (can_send_ret)
+		if (can_send_ret) {
 			pr_notice_once("can-isotp: %s: can_send_ret %pe\n",
 				       __func__, ERR_PTR(can_send_ret));
-
+			if (can_send_ret == -ENOBUFS)
+				pr_notice_once("can-isotp: tx queue is full, increasing txqueuelen may prevent this error\n");
+		}
 		if (so->tx.idx >= so->tx.len) {
 			/* we are done */
 			so->tx.state = ISOTP_IDLE;