diff --git a/src/libcamera/property_ids.yaml b/src/libcamera/property_ids.yaml
index 104e9aaf..fd17bf0c 100644
--- a/src/libcamera/property_ids.yaml
+++ b/src/libcamera/property_ids.yaml
@@ -10,18 +10,22 @@ controls:
       description: |
         Camera mounting location
       enum:
-        - name: CameraLocationFront
+        - name: CameraLocationUnknown
           value: 0
+          description: |
+            The camera location is unknown
+        - name: CameraLocationFront
+          value: 1
           description: |
             The camera is mounted on the front side of the device, facing the
             user
         - name: CameraLocationBack
-          value: 1
+          value: 2
           description: |
             The camera is mounted on the back side of the device, facing away
             from the user
         - name: CameraLocationExternal
-          value: 2
+          value: 3
           description: |
             The camera is attached to the device in a way that allows it to
             be moved freely