diff --git a/src/batcontrol/logic/default.py b/src/batcontrol/logic/default.py
index 7c3beb0..0271346 100644
--- a/src/batcontrol/logic/default.py
+++ b/src/batcontrol/logic/default.py
@@ -262,7 +262,7 @@ def __is_discharge_allowed(self, calc_input: CalculationInput,
             future_price = prices[slot]
             # !!! different formula compared to detect relevant slots
             if future_price > current_price:
-                higher_price_slots.append(slot  )
+                higher_price_slots.append(slot)
 
         higher_price_slots.sort()
         higher_price_slots.reverse()