diff --git a/message_definitions/v1.0/common.xml b/message_definitions/v1.0/common.xml
index bd58c97630..8cfddb8463 100644
--- a/message_definitions/v1.0/common.xml
+++ b/message_definitions/v1.0/common.xml
@@ -1666,6 +1666,12 @@
         <param index="1" label="Storage ID" minValue="0" increment="1">Storage ID (1 for first, 2 for second, etc.)</param>
         <param index="2" label="Usage" enum="STORAGE_USAGE_FLAG">Usage flags</param>
       </entry>
+      <entry value="534" name="MAV_CMD_SET_CAMERA_SOURCE" hasLocation="false" isDestination="false">
+        <description>Set camera source. Changes the camera's active sources on cameras with multiple image sensors.</description>
+        <param index="1" label="device id">Component Id of camera to address or 1-6 for non-MAVLink cameras, 0 for all cameras.</param>
+        <param index="2" label="primary source" enum="CAMERA_SOURCE">Primary Source</param>
+        <param index="3" label="secondary source" enum="CAMERA_SOURCE">Secondary Source. If non-zero the second source will be displayed as picture-in-picture.</param>
+      </entry>
       <entry value="600" name="MAV_CMD_JUMP_TAG" hasLocation="false" isDestination="false">
         <description>Tagged jump target. Can be jumped to with MAV_CMD_DO_JUMP_TAG.</description>
         <param index="1" label="Tag" minValue="0" increment="1">Tag.</param>