diff --git a/docs/en/dronecan/ark_flow.md b/docs/en/dronecan/ark_flow.md
index e97266dda7..8b43846bd3 100644
--- a/docs/en/dronecan/ark_flow.md
+++ b/docs/en/dronecan/ark_flow.md
@@ -95,6 +95,7 @@ Set the following parameters in _QGroundControl_:
 - To optionally disable GPS aiding, set [EKF2_GPS_CTRL](../advanced_config/parameter_reference.md#EKF2_GPS_CTRL) to `0`.
 - Enable [UAVCAN_SUB_FLOW](../advanced_config/parameter_reference.md#UAVCAN_SUB_FLOW).
 - Enable [UAVCAN_SUB_RNG](../advanced_config/parameter_reference.md#UAVCAN_SUB_RNG).
+- Set [EKF2_RNG_CTRL](../advanced_config/parameter_reference.md#EKF2_RNG_CTRL) to `1`.
 - Set [EKF2_RNG_A_HMAX](../advanced_config/parameter_reference.md#EKF2_RNG_A_HMAX) to `10`.
 - Set [EKF2_RNG_QLTY_T](../advanced_config/parameter_reference.md#EKF2_RNG_QLTY_T) to `0.2`.
 - Set [UAVCAN_RNG_MIN](../advanced_config/parameter_reference.md#UAVCAN_RNG_MIN) to `0.08`.
diff --git a/docs/en/dronecan/ark_flow_mr.md b/docs/en/dronecan/ark_flow_mr.md
index b36d0035fe..dae831b467 100644
--- a/docs/en/dronecan/ark_flow_mr.md
+++ b/docs/en/dronecan/ark_flow_mr.md
@@ -92,6 +92,7 @@ Set the following parameters in _QGroundControl_:
 - To optionally disable GPS aiding, set [EKF2_GPS_CTRL](../advanced_config/parameter_reference.md#EKF2_GPS_CTRL) to `0`.
 - Enable [UAVCAN_SUB_FLOW](../advanced_config/parameter_reference.md#UAVCAN_SUB_FLOW).
 - Enable [UAVCAN_SUB_RNG](../advanced_config/parameter_reference.md#UAVCAN_SUB_RNG).
+- Set [EKF2_RNG_CTRL](../advanced_config/parameter_reference.md#EKF2_RNG_CTRL) to `1`.
 - Set [EKF2_RNG_A_HMAX](../advanced_config/parameter_reference.md#EKF2_RNG_A_HMAX) to `10`.
 - Set [EKF2_RNG_QLTY_T](../advanced_config/parameter_reference.md#EKF2_RNG_QLTY_T) to `0.2`.
 - Set [UAVCAN_RNG_MIN](../advanced_config/parameter_reference.md#UAVCAN_RNG_MIN) to `0.08`.