diff --git a/freqtrade/optimize/backtesting.py b/freqtrade/optimize/backtesting.py
index d858acc1a..7de5b171c 100644
--- a/freqtrade/optimize/backtesting.py
+++ b/freqtrade/optimize/backtesting.py
@@ -30,6 +30,7 @@ from freqtrade.strategy.interface import IStrategy, SellCheckTuple, SellType
 from freqtrade.strategy.strategy_wrapper import strategy_safe_wrapper
 from freqtrade.wallets import Wallets
 
+
 logger = logging.getLogger(__name__)
 
 # Indexes for backtest tuples