diff --git a/Tools/scripts/build_options.py b/Tools/scripts/build_options.py
index f07483c727..097fd4d3eb 100644
--- a/Tools/scripts/build_options.py
+++ b/Tools/scripts/build_options.py
@@ -279,7 +279,8 @@ BUILD_OPTIONS = [
     Feature('Proximity', 'PROXIMITY_CYGBOT', 'AP_PROXIMITY_CYGBOT_ENABLED', 'Enable Cygbot D1 Proximity Sensors', 0, "PROXIMITY"),  # noqa
     Feature('Proximity', 'PROXIMITY_DRONECAN', 'AP_PROXIMITY_DRONECAN_ENABLED', 'Enable DroneCAN Proximity Sensors', 0, "PROXIMITY,DroneCAN"),  # noqa
     Feature('Proximity', 'PROXIMITY_LIGHTWARE_SF40C', 'AP_PROXIMITY_LIGHTWARE_SF40C_ENABLED', 'Enable LightWare SF40C Proximity Sensors', 0, "PROXIMITY"),  # noqa
-    Feature('Proximity', 'PROXIMITY_LIGHTWARE_SF45B', 'AP_PROXIMITY_LIGHTWARE_SF45B_ENABLED', 'Enable LightWare SF45B Proximity Sensors', 0, "PROXIMITY"),  # noqa
+    Feature('Proximity', 'PROXIMITY_LW_SF45B_SERIAL', 'AP_PROXIMITY_LIGHTWARE_SF45B_SERIAL_ENABLED', 'Enable LightWare SF45B Serial Proximity Sensors', 0, "PROXIMITY"),  # noqa
+    Feature('Proximity', 'PROXIMITY_LW_SF45B_I2C', 'AP_PROXIMITY_LIGHTWARE_SF45B_I2C_ENABLED', 'Enable LightWare SF45B I2C Proximity Sensors', 0, "PROXIMITY"),  # noqa
     Feature('Proximity', 'PROXIMITY_MAV', 'AP_PROXIMITY_MAV_ENABLED', 'Enable MAVLink Proximity Sensors', 0, "PROXIMITY"),  # noqa
     Feature('Proximity', 'PROXIMITY_RANGEFINDER', 'AP_PROXIMITY_RANGEFINDER_ENABLED', 'Use RangeFinders as proximity sensors', 0, "PROXIMITY,RANGEFINDER"),  # noqa
     Feature('Proximity', 'PROXIMITY_RPLIDARA2', 'AP_PROXIMITY_RPLIDARA2_ENABLED', 'Enable RPLidarA2 Proximity Sensors', 0, "PROXIMITY"),  # noqa