diff --git a/idwms/admin.json b/idwms/admin.json
index c1e73b6..070a84d 100644
--- a/idwms/admin.json
+++ b/idwms/admin.json
@@ -49,6 +49,11 @@
       "OAuthRedirectBase": "https://ideship.com"
     }
   },
+  "FileStorage": {
+    "Cos": {
+      "KeyPrefix": "admin/"
+    }
+  },
   "Oms": {
     "TrackService": {
       "Enabled": true,