diff --git a/subsys/net/lib/ptp/msg.c b/subsys/net/lib/ptp/msg.c
index dac0617b0c0..f3af671b4d8 100644
--- a/subsys/net/lib/ptp/msg.c
+++ b/subsys/net/lib/ptp/msg.c
@@ -328,6 +328,7 @@ void ptp_msg_pre_send(struct ptp_msg *msg)
 		msg_port_id_pre_send(&msg->pdelay_resp.req_port_id);
 		break;
 	case PTP_MSG_FOLLOW_UP:
+		msg_timestamp_pre_send(&msg->follow_up.precise_origin_timestamp);
 		break;
 	case PTP_MSG_DELAY_RESP:
 		msg_timestamp_pre_send(&msg->delay_resp.receive_timestamp);