diff --git a/market_trade/signals/Signal1.py b/market_trade/signals/Signal1.py
index 0a2564d..659425c 100644
--- a/market_trade/signals/Signal1.py
+++ b/market_trade/signals/Signal1.py
@@ -30,7 +30,7 @@ import market_trade.core.Ind_bollingerBands
 import market_trade.signals.coreSignal
 
     
-class SignalBollingerBands1(market_trade.signals.coreSignal):
+class SignalBollingerBands1(market_trade.signals.coreSignal.coreSignal):
     def __init__(self,
                   IndDict={},
                   mode='retro',