diff --git a/message_definitions/v1.0/common.xml b/message_definitions/v1.0/common.xml
index b42796bf77..b7ef9bf40f 100644
--- a/message_definitions/v1.0/common.xml
+++ b/message_definitions/v1.0/common.xml
@@ -2877,6 +2877,15 @@
       <entry value="131072" name="MAV_GENERATOR_STATUS_FLAG_OVERVOLTAGE_FAULT">
         <description>Generator controller exceeded it's overvoltage threshold and shutdown to prevent it exceeding the voltage rating.</description>
       </entry>
+      <entry value="262144" name="MAV_GENERATOR_STATUS_FLAG_BATTERY_UNDERVOLT_FAULT">
+        <description>Batteries are under voltage.</description>
+      </entry>
+      <entry value="524288" name="MAV_GENERATOR_STATUS_FLAG_START_INHIBITED">
+        <description>Generator start is inhibited by e.g. a safety switch.</description>
+      </entry>
+      <entry value="1048576" name="MAV_GENERATOR_STATUS_FLAG_MAINTENANCE_REQUIRED">
+        <description>Generator requires maintenance.</description>
+      </entry>
     </enum>
     <enum name="MAV_VTOL_STATE">
       <description>Enumeration of VTOL states</description>