diff --git a/libraries/GCS_MAVLink/message_definitions/common.xml b/libraries/GCS_MAVLink/message_definitions/common.xml
index 89044322b0..c51b0cf209 100644
--- a/libraries/GCS_MAVLink/message_definitions/common.xml
+++ b/libraries/GCS_MAVLink/message_definitions/common.xml
@@ -143,6 +143,24 @@
Onboard gimbal
+
+ These values define the type of firmware release.
+
+ A development version of the software. Basically, anything compiled from master branch.
+
+
+ The first alpha release.
+
+
+ The first beta release.
+
+
+ The first release candidate.
+
+
+ The official, stable release.
+
+
These flags encode the MAV mode.