diff --git a/vnpy/app/cta_strategy/strategies/test_strategy.py b/vnpy/app/cta_strategy/strategies/test_strategy.py
index 814ae57e..f0a31c3b 100644
--- a/vnpy/app/cta_strategy/strategies/test_strategy.py
+++ b/vnpy/app/cta_strategy/strategies/test_strategy.py
@@ -12,7 +12,7 @@ from time import time
 
 class TestStrategy(CtaTemplate):
     """"""
-    author = '用Python的交易员'
+    author = "用Python的交易员"
 
     test_trigger = 10