diff --git a/vnpy/trader/app/ctaStrategy/ctaHistoryData.py b/vnpy/trader/app/ctaStrategy/ctaHistoryData.py
index d9c97375..34b6a284 100644
--- a/vnpy/trader/app/ctaStrategy/ctaHistoryData.py
+++ b/vnpy/trader/app/ctaStrategy/ctaHistoryData.py
@@ -17,6 +17,7 @@ from vnpy.data.datayes import DatayesApi
 from vnpy.trader.vtGlobal import globalSetting
 from vnpy.trader.vtConstant import *
 from vnpy.trader.vtObject import VtBarData
+from .ctaBase import SETTING_DB_NAME, TICK_DB_NAME, MINUTE_DB_NAME
 
 
 # 以下为vn.trader和通联数据规定的交易所代码映射