diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso-bt_ll_sw_split.conf
index 1b8d2197cc0..791eba3dbac 100644
--- a/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso-bt_ll_sw_split.conf
+++ b/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso-bt_ll_sw_split.conf
@@ -75,6 +75,7 @@ CONFIG_BT_CTLR_ADV_DATA_BUF_MAX=6
 
 # Increase the below to receive interleaved advertising chains
 CONFIG_BT_CTLR_SCAN_AUX_SET=3
+CONFIG_BT_CTLR_LOW_LAT_ULL=y
 # CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
 # CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=1