diff --git a/subsys/bluetooth/controller/ll_sw/ull_conn.c b/subsys/bluetooth/controller/ll_sw/ull_conn.c
index f681d229610..1140ce1f105 100644
--- a/subsys/bluetooth/controller/ll_sw/ull_conn.c
+++ b/subsys/bluetooth/controller/ll_sw/ull_conn.c
@@ -2320,8 +2320,14 @@ static inline int event_conn_upd_prep(struct ll_conn *conn, uint16_t lazy,
 			return -EINPROGRESS;
 
 		case LLCP_CUI_STATE_REJECT:
-			/* move to in progress */
-			conn->llcp_cu.state = LLCP_CUI_STATE_INPROG;
+			/* procedure request acked */
+			conn->llcp_ack = conn->llcp_req;
+			conn->llcp_cu.ack = conn->llcp_cu.req;
+			conn->llcp_conn_param.ack = conn->llcp_conn_param.req;
+
+			/* reset mutex */
+			ull_conn_upd_curr_reset();
+
 			/* enqueue control PDU */
 			pdu_ctrl_tx =
 				CONTAINER_OF(conn->llcp.conn_upd.pdu_win_offset,
@@ -2329,7 +2335,8 @@ static inline int event_conn_upd_prep(struct ll_conn *conn, uint16_t lazy,
 					     llctrl.conn_update_ind.win_offset);
 			tx = CONTAINER_OF(pdu_ctrl_tx, struct node_tx, pdu);
 			ctrl_tx_enqueue(conn, tx);
-			return -EINPROGRESS;
+			return -ECANCELED;
+
 		default:
 			LL_ASSERT(0);
 			break;
diff --git a/subsys/bluetooth/controller/ll_sw/ull_sched.c b/subsys/bluetooth/controller/ll_sw/ull_sched.c
index c45bee1e6d3..bc062e420d7 100644
--- a/subsys/bluetooth/controller/ll_sw/ull_sched.c
+++ b/subsys/bluetooth/controller/ll_sw/ull_sched.c
@@ -277,15 +277,6 @@ void ull_sched_mfy_win_offset_select(void *param)
 	} else {
 		struct pdu_data *pdu_ctrl_tx;
 
-		/* procedure request acked */
-		conn->llcp_ack = conn->llcp_req;
-
-		/* CPR request acked */
-		conn->llcp_conn_param.ack = conn->llcp_conn_param.req;
-
-		/* reset mutex */
-		ull_conn_upd_curr_reset();
-
 		/* send reject_ind_ext */
 		pdu_ctrl_tx = CONTAINER_OF(conn->llcp.conn_upd.pdu_win_offset,
 					   struct pdu_data,