diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_df-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_df-bt_ll_sw_split.conf
index 403501a5810..4474f78cd99 100644
--- a/samples/bluetooth/hci_ipc/nrf5340_cpunet_df-bt_ll_sw_split.conf
+++ b/samples/bluetooth/hci_ipc/nrf5340_cpunet_df-bt_ll_sw_split.conf
@@ -16,7 +16,7 @@ CONFIG_BT_MAX_CONN=2
 # Host number of completed commands does not follow normal flow control.
 CONFIG_BT_BUF_CMD_TX_COUNT=10
 
-CONFIG_BT_BUF_EVT_RX_COUNT=16
+CONFIG_BT_BUF_EVT_RX_COUNT=15
 
 CONFIG_BT_BUF_EVT_RX_SIZE=255
 CONFIG_BT_BUF_ACL_RX_SIZE=255