diff --git a/freqtrade/optimize/backtesting.py b/freqtrade/optimize/backtesting.py
index 4a5536e84..1ef845205 100644
--- a/freqtrade/optimize/backtesting.py
+++ b/freqtrade/optimize/backtesting.py
@@ -901,7 +901,7 @@ class Backtesting:
                 amount=amount,
                 filled=0,
                 remaining=amount,
-                cost=stake_amount + trade.fee_open,
+                cost=amount * propose_rate + trade.fee_open,
             )
             trade.orders.append(order)
             if pos_adjust and self._get_order_filled(order.ft_price, row):