diff --git a/freqtrade/strategy/interface.py b/freqtrade/strategy/interface.py
index 08a5cf1cd..512736558 100644
--- a/freqtrade/strategy/interface.py
+++ b/freqtrade/strategy/interface.py
@@ -302,7 +302,7 @@ class IStrategy(ABC):
             # and if profit is positive
             stop_loss_value = force_stoploss if force_stoploss else self.stoploss
 
-            sl_offset = self.config.get('trailing_stop_positive_offset', 0.0)
+            sl_offset = self.config.get('trailing_stop_positive_offset') or 0.0
 
             if 'trailing_stop_positive' in self.config and current_profit > sl_offset: