diff --git a/titles/mai2/dx.py b/titles/mai2/dx.py
index 0de0950..4423824 100644
--- a/titles/mai2/dx.py
+++ b/titles/mai2/dx.py
@@ -17,6 +17,8 @@ class Mai2DX(Mai2Base):
         self.version = Mai2Constants.VER_MAIMAI_DX
 
         # DX earlier version need a efficient old server uri to work
+        # game will auto add MaimaiServlet endpoint behind return uri
+        # so do not add "MaimaiServlet"
         if not self.core_config.server.is_using_proxy and Utils.get_title_port(self.core_config) != 80:
             self.old_server = f"http://{self.core_config.server.hostname}:{Utils.get_title_port(cfg)}/SDEY/197/"