diff --git a/libraries/GCS_MAVLink/message_definitions/common.xml b/libraries/GCS_MAVLink/message_definitions/common.xml
index c51b0cf209..da1e816918 100644
--- a/libraries/GCS_MAVLink/message_definitions/common.xml
+++ b/libraries/GCS_MAVLink/message_definitions/common.xml
@@ -143,24 +143,24 @@
                     <description>Onboard gimbal</description>
                </entry>
           </enum>
-          <enum name="FIRMWARE_RELEASE_TYPE">
-              <description>These values define the type of firmware release.</description>
-              <entry value="0" name="DEV">
-                  <description>A development version of the software.  Basically, anything compiled from master branch.</description>
+          <enum name="FIRMWARE_VERSION_TYPE">
+              <description>These values define the type of firmware release.  These values indicate the first version or release of this type.  For example the first alpha release would be 64, the second would be 65.</description>
+              <entry value="0" name="FIRMWARE_VERSION_TYPE_DEV">
+                  <description>development release</description>
               </entry>
-              <entry value="64" name="ALPHA1">
-                  <description>The first alpha release.</description>
+              <entry value="64" name="FIRMWARE_VERSION_TYPE_ALPHA">
+                  <description>alpha release</description>
               </entry>
-              <entry value="128" name="BETA1">
-                  <description>The first beta release.</description>
+              <entry value="128" name="FIRMWARE_VERSION_TYPE_BETA">
+                  <description>beta release</description>
               </entry>
-              <entry value="192" name="RC1">
-                  <description>The first release candidate.</description>
+              <entry value="192" name="FIRMWARE_VERSION_TYPE_RC">
+                  <description>release candidate</description>
               </entry>
-              <entry value="255" name="RELEASE">
-                  <description>The official, stable release.</description>
+              <entry value="255" name="FIRMWARE_VERSION_TYPE_OFFICIAL">
+                  <description>official stable release</description>
               </entry>
-        </enum>
+          </enum>
           <!-- WARNING: MAV_ACTION Enum is no longer supported - has been removed. Please use MAV_CMD -->
           <enum name="MAV_MODE_FLAG">
                 <description>These flags encode the MAV mode.</description>