diff --git a/examples/JaqsService/run.py b/examples/JaqsService/run.py
index cf954f24..6b33cf15 100644
--- a/examples/JaqsService/run.py
+++ b/examples/JaqsService/run.py
@@ -12,6 +12,7 @@ from vnpy.event import EventEngine
 from vnpy.trader.vtEngine import MainEngine, LogEngine
 from vnpy.trader.uiQt import createQApp
 from vnpy.trader.uiMainWindow import MainWindow
+from vnpy.trader.vtEvent import EVENT_LOG
 
 # 加载底层接口
 from vnpy.trader.gateway import ctpGateway