diff --git a/vn.trader/vtServer.py b/vn.trader/vtServer.py
index d3e201ae..16698105 100644
--- a/vn.trader/vtServer.py
+++ b/vn.trader/vtServer.py
@@ -7,6 +7,7 @@ from datetime import datetime
 from time import sleep
 from threading import Thread
 
+import vtPath
 import eventType
 from vnrpc import RpcServer
 from vtEngine import MainEngine