diff --git a/mobile/lib/face/db.dart b/mobile/lib/face/db.dart
index 80712e5fa..507633049 100644
--- a/mobile/lib/face/db.dart
+++ b/mobile/lib/face/db.dart
@@ -105,6 +105,7 @@ class FaceMLDataDB {
     }
   }
 
+  /// Returns a map of fileID to the indexed ML version
   Future<Map<int, int>> getIndexedFileIds() async {
     final db = await instance.database;
     final List<Map<String, dynamic>> maps = await db.rawQuery(