diff --git a/src/libcamera/property_ids.yaml b/src/libcamera/property_ids.yaml
index 104e9aaf..66deaa84 100644
--- a/src/libcamera/property_ids.yaml
+++ b/src/libcamera/property_ids.yaml
@@ -25,6 +25,10 @@ controls:
           description: |
             The camera is attached to the device in a way that allows it to
             be moved freely
+        - name: CameraLocationUnknown
+          value: 3
+          description: |
+            The camera location is unknown
 
   - Rotation:
       type: int32_t