Update blehci_project.rst
diff --git a/docs/tutorials/ble/blehci_project.rst b/docs/tutorials/ble/blehci_project.rst
index a3f89a4..04144ae 100644
--- a/docs/tutorials/ble/blehci_project.rst
+++ b/docs/tutorials/ble/blehci_project.rst
@@ -195,7 +195,9 @@
If there is no CTS/RTS lines present in the test environment, flow
control should be turned off. This can be done with -N option for
-btattach. **Note:** -N option came with BlueZ ver 5.44.
+btattach. **Note:** -N option came with BlueZ ver 5.44.
+Also, modify the value of ``BLE_HCI_UART_FLOW_CTRL`` in the
+``nimble/transport/uart/syscfg.yml`` to ``HAL_UART_FLOW_CTL_NONE``.
Start btmgmt to send commands
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
