diff --git a/Tools/scripts/build_options.py b/Tools/scripts/build_options.py
index 9432afb168..2a2253c3a7 100644
--- a/Tools/scripts/build_options.py
+++ b/Tools/scripts/build_options.py
@@ -68,6 +68,7 @@ BUILD_OPTIONS = [
     Feature('Telemetry', 'FrSky SPort PassThrough', 'AP_FRSKY_SPORT_PASSTHROUGH_ENABLED', 'Enable FrSkySPort PassThrough Telemetry', 0, 'FrSky SPort,FrSky'),  # noqa
 
     Feature('Notify', 'PLAY_TUNE', 'AP_NOTIFY_MAVLINK_PLAY_TUNE_SUPPORT_ENABLED', 'Enable MAVLink Play Tune', 0, None),  # noqa
+    Feature('Notify', 'TONEALARM', 'AP_NOTIFY_TONEALARM_ENABLED', 'Enable ToneAlarm on PWM', 0, None),  # noqa
     Feature('Notify', 'LED_CONTROL', 'AP_NOTIFY_MAVLINK_LED_CONTROL_SUPPORT_ENABLED', 'Enable MAVLink LED Control', 0, None),  # noqa
     Feature('Notify', 'NOTIFY_NCP5623', 'AP_NOTIFY_NCP5623_ENABLED', 'Enable NCP5623 LED', 0, None),  # noqa
     # Feature('Notify', 'NOTIFY_PCA9685', 'AP_NOTIFY_PCA9685_ENABLED', 'Enable PCA9685 LED', 0, None),  # noqa  linux-only
diff --git a/Tools/scripts/extract_features.py b/Tools/scripts/extract_features.py
index 4e89175fc6..d033cc8e56 100755
--- a/Tools/scripts/extract_features.py
+++ b/Tools/scripts/extract_features.py
@@ -179,6 +179,7 @@ class ExtractFeatures(object):
 
             ('AP_RC_CHANNEL_AUX_FUNCTION_STRINGS_ENABLED', r'RC_Channel::lookuptable',),
 
+            ('AP_NOTIFY_TONEALARM_ENABLED', r'AP_ToneAlarm::init'),
             ('AP_NOTIFY_MAVLINK_PLAY_TUNE_SUPPORT_ENABLED', r'AP_Notify::handle_play_tune'),
             ('AP_NOTIFY_MAVLINK_LED_CONTROL_SUPPORT_ENABLED', r'AP_Notify::handle_led_control'),
             ('AP_NOTIFY_NCP5623_ENABLED', r'NCP5623::write'),