diff --git a/collection/opendb-admin-menus/collection.json b/collection/opendb-admin-menus/collection.json
index 5187d0f..3829566 100644
--- a/collection/opendb-admin-menus/collection.json
+++ b/collection/opendb-admin-menus/collection.json
@@ -47,18 +47,6 @@
     }
   },
   "index": [
-    {
-      "IndexName": "permission",
-      "MgoKeySchema": {
-        "MgoIndexKeys": [
-          {
-            "Name": "permission",
-            "Direction": "1"
-          }
-        ],
-        "MgoIsUnique": false
-      }
-    },
     {
       "IndexName": "menu_id",
       "MgoKeySchema": {
@@ -70,6 +58,30 @@
         ],
         "MgoIsUnique": true
       }
+    },
+    {
+      "IndexName": "parent_id",
+      "MgoKeySchema": {
+        "MgoIndexKeys": [
+          {
+            "Name": "parent_id",
+            "Direction": "1"
+          }
+        ],
+        "MgoIsUnique": false
+      }
+    },
+    {
+      "IndexName": "permission",
+      "MgoKeySchema": {
+        "MgoIndexKeys": [
+          {
+            "Name": "permission",
+            "Direction": "1"
+          }
+        ],
+        "MgoIsUnique": false
+      }
     }
   ]
 }
\ No newline at end of file