diff --git a/config.json.default b/config.json.default
index 12734a7..302debc 100644
--- a/config.json.default
+++ b/config.json.default
@@ -1,12 +1,9 @@
 {
-  "account_id": null,
-  "event_id": null,
-  "event_device_id": null,
-  "event_location_id": null,
-  "event_session_id": null,
-  "event_presentation_id": null,
-  "event_presenter_id": null,
-  "event_file_id": null,
+  "account_id": "",
+  "event_id": "",
+  "event_device_id": "",
+  "event_location_id": "",
+  "event_session_id": "",
 
   "api_secret_key": "XXXXXX",
   "api_remote_base_url": "https://dev-fastapi.oneskyit.com",