diff --git a/freqtrade/strategy/interface.py b/freqtrade/strategy/interface.py
index 88029f4d4..08a5cf1cd 100644
--- a/freqtrade/strategy/interface.py
+++ b/freqtrade/strategy/interface.py
@@ -278,9 +278,9 @@ class IStrategy(ABC):
                                else self.stoploss, initial=True)
 
         # evaluate if the stoploss was hit if stoploss is not on exchange
-        if self.stoploss is not None and \
-           trade.stop_loss >= current_rate and \
-           not self.order_types.get('stoploss_on_exchange'):
+        if ((self.stoploss is not None) and
+           (trade.stop_loss >= current_rate) and
+           (not self.order_types.get('stoploss_on_exchange'))):
             selltype = SellType.STOP_LOSS
             # If Trailing stop (and max-rate did move above open rate)
             if trailing_stop and trade.open_rate != trade.max_rate: