diff --git a/tc.c b/tc.c
index 8b71451..fb46603 100644
--- a/tc.c
+++ b/tc.c
@@ -290,7 +290,7 @@ static int tc_fwd_event(struct port *q, struct ptp_message *msg)
 		if (tc_blocked(q, p, msg)) {
 			continue;
 		}
-		err = transport_txts(p->trp, &p->fda, msg);
+		err = transport_txts(&p->fda, msg);
 		if (err || !msg_sots_valid(msg)) {
 			pr_err("failed to fetch txts on port %hd to %hd event",
 				portnum(q), portnum(p));
diff --git a/transport.c b/transport.c
index 8fb94de..9366fbf 100644
--- a/transport.c
+++ b/transport.c
@@ -66,7 +66,7 @@ int transport_sendto(struct transport *t, struct fdarray *fda,
 	return t->send(t, fda, event, 0, msg, len, &msg->address, &msg->hwts);
 }
 
-int transport_txts(struct transport *t, struct fdarray *fda,
+int transport_txts(struct fdarray *fda,
 		   struct ptp_message *msg)
 {
 	int cnt, len = ntohs(msg->header.messageLength);
diff --git a/transport.h b/transport.h
index 4f6dc36..5b8c413 100644
--- a/transport.h
+++ b/transport.h
@@ -105,13 +105,12 @@ int transport_sendto(struct transport *t, struct fdarray *fda,
  * Fetches the transmit time stamp for a PTP message that was sent
  * with the TRANS_DEFER_EVENT flag.
  *
- * @param t	The transport.
  * @param fda	The array of descriptors filled in by transport_open.
  * @param msg	The message previously sent using transport_send(),
  *              transport_peer(), or transport_sendto().
  * @return	Zero on success, or negative value in case of an error.
  */
-int transport_txts(struct transport *t, struct fdarray *fda,
+int transport_txts(struct fdarray *fda,
 		   struct ptp_message *msg);
 
 /**