diff --git a/freqtrade/strategy/interface.py b/freqtrade/strategy/interface.py
index 8976b2fd5..2b4a8dd03 100644
--- a/freqtrade/strategy/interface.py
+++ b/freqtrade/strategy/interface.py
@@ -21,7 +21,6 @@ from freqtrade.persistence import PairLocks, Trade
 from freqtrade.strategy.strategy_wrapper import strategy_safe_wrapper
 from freqtrade.wallets import Wallets
 
-
 logger = logging.getLogger(__name__)
 
 
@@ -482,7 +481,9 @@ class IStrategy(ABC):
         logger.debug('trigger: %s (pair=%s) buy=%s sell=%s',
                      latest['date'], pair, str(buy), str(sell))
         timeframe_seconds = timeframe_to_seconds(timeframe)
-        if self.ignore_expired_candle(latest_date=latest_date, timeframe_seconds=timeframe_seconds, buy=buy):
+        if self.ignore_expired_candle(latest_date=latest_date,
+                                      timeframe_seconds=timeframe_seconds,
+                                      buy=buy):
             return False, sell
         return buy, sell
 
diff --git a/tests/strategy/test_interface.py b/tests/strategy/test_interface.py
index af086b0da..d7d113a4e 100644
--- a/tests/strategy/test_interface.py
+++ b/tests/strategy/test_interface.py
@@ -117,7 +117,9 @@ def test_ignore_expired_candle(default_conf, ohlcv_history):
     mocked_history = ohlcv_history.copy()
     latest_date = mocked_history['date'].max()
 
-    assert strategy.ignore_expired_candle(latest_date=latest_date, timeframe_seconds=300, buy=True) is True
+    assert strategy.ignore_expired_candle(latest_date=latest_date,
+                                          timeframe_seconds=300,
+                                          buy=True) is True
 
 
 def test_assert_df_raise(mocker, caplog, ohlcv_history):