diff --git a/f8/utils.h b/f8/utils.h
index 1daf247..c75bf68 100644
--- a/f8/utils.h
+++ b/f8/utils.h
@@ -20,7 +20,7 @@ namespace f8
     bool ReadJsonMetaFile(const std::string& filename, std::vector<T*>& meta_list)
     {
         T dummy;
-        a8::reflect::Class* cls = dummy.GetClass();
+        auto cls = dummy.GetClass();
 
         a8::XObject xobj_arr;
         xobj_arr.ReadFromFile(filename);