diff --git a/MyApp.ServiceInterface/Data/QuestionsProvider.cs b/MyApp.ServiceInterface/Data/QuestionsProvider.cs
index 056f423..79a301b 100644
--- a/MyApp.ServiceInterface/Data/QuestionsProvider.cs
+++ b/MyApp.ServiceInterface/Data/QuestionsProvider.cs
@@ -71,7 +71,7 @@ public static string GetQuestionPath(int id)
     public static string GetModelAnswerPath(int id, string model)
     {
         var (dir1, dir2, fileId) = id.ToFileParts();
-        var path = $"{dir1}/{dir2}/{fileId}.{model}.json";
+        var path = $"{dir1}/{dir2}/{fileId}.a.{model}.json";
         return path;
     }