diff --git a/freqtrade/strategy/interface.py b/freqtrade/strategy/interface.py
index 179db1313..3fddc98df 100644
--- a/freqtrade/strategy/interface.py
+++ b/freqtrade/strategy/interface.py
@@ -961,9 +961,9 @@ class IStrategy(ABC, HyperStrategyMixin):
             else:
                 logger.warning("CustomStoploss function did not return valid stoploss")
 
-        sl_lower_long = (trade.stop_loss < (low or current_rate) and not trade.is_short)
-        sl_higher_short = (trade.stop_loss > (high or current_rate) and trade.is_short)
-        if self.trailing_stop and (sl_lower_long or sl_higher_short):
+        sl_lower_short = (trade.stop_loss < (low or current_rate) and not trade.is_short)
+        sl_higher_long = (trade.stop_loss > (high or current_rate) and trade.is_short)
+        if self.trailing_stop and (sl_lower_short or sl_higher_long):
             # trailing stoploss handling
             sl_offset = self.trailing_stop_positive_offset
 
@@ -981,12 +981,12 @@ class IStrategy(ABC, HyperStrategyMixin):
 
                 trade.adjust_stop_loss(bound or current_rate, stop_loss_value)
 
-        sl_higher_short = (trade.stop_loss >= (low or current_rate) and not trade.is_short)
-        sl_lower_long = ((trade.stop_loss <= (high or current_rate) and trade.is_short))
+        sl_higher_long = (trade.stop_loss >= (low or current_rate) and not trade.is_short)
+        sl_lower_short = (trade.stop_loss <= (high or current_rate) and trade.is_short)
         # evaluate if the stoploss was hit if stoploss is not on exchange
         # in Dry-Run, this handles stoploss logic as well, as the logic will not be different to
         # regular stoploss handling.
-        if ((sl_higher_short or sl_lower_long) and
+        if ((sl_higher_long or sl_lower_short) and
                 (not self.order_types.get('stoploss_on_exchange') or self.config['dry_run'])):
 
             sell_type = SellType.STOP_LOSS
diff --git a/tests/optimize/test_backtest_detail.py b/tests/optimize/test_backtest_detail.py
index ad9ae7786..7ede1adc3 100644
--- a/tests/optimize/test_backtest_detail.py
+++ b/tests/optimize/test_backtest_detail.py
@@ -520,7 +520,9 @@ tc28s = BTContainer(data=[
     stop_loss=-0.10, roi={"0": 0.10}, profit_perc=-0.03, trailing_stop=True,
     trailing_only_offset_is_reached=True, trailing_stop_positive_offset=0.05,
     trailing_stop_positive=0.03,
-    trades=[BTrade(sell_reason=SellType.TRAILING_STOP_LOSS, open_tick=1, close_tick=3, is_short=True)]
+    trades=[
+        BTrade(sell_reason=SellType.TRAILING_STOP_LOSS, open_tick=1, close_tick=3, is_short=True)
+    ]
 )
 
 # Test 29: trailing_stop should be triggered by low of next candle, without adjusting stoploss using