diff --git a/vnpy/trader/uiQt.py b/vnpy/trader/uiQt.py
index 2fa5ae4a..ec189081 100644
--- a/vnpy/trader/uiQt.py
+++ b/vnpy/trader/uiQt.py
@@ -27,7 +27,7 @@ def createQApp():
             import qdarkstyle
             qApp.setStyleSheet(qdarkstyle.load_stylesheet_pyqt5())
         except :
-            print "Unexpected error:", sys.exc_info()[0]
+            print "Unexpected error when import darkStyle:", sys.exc_info()[0]
 
     # 设置Windows底部任务栏图标
     if 'Windows' in platform.uname():