diff --git a/freqtrade/persistence/trade_model.py b/freqtrade/persistence/trade_model.py
index 0d5e7d200..26e06e023 100644
--- a/freqtrade/persistence/trade_model.py
+++ b/freqtrade/persistence/trade_model.py
@@ -270,6 +270,7 @@ class Order(ModelBase):
             "order_filled_timestamp": dt_ts_none(self.order_filled_utc),
             "ft_is_entry": self.ft_order_side == entry_side,
             "ft_order_tag": self.ft_order_tag,
+            "cost": self.cost if self.cost else 0,
         }
         if not minified:
             resp.update(
@@ -278,7 +279,6 @@ class Order(ModelBase):
                     "order_id": self.order_id,
                     "status": self.status,
                     "average": round(self.average, 8) if self.average else 0,
-                    "cost": self.cost if self.cost else 0,
                     "filled": self.filled,
                     "is_open": self.ft_is_open,
                     "order_date": (
diff --git a/tests/optimize/test_backtesting.py b/tests/optimize/test_backtesting.py
index 81d63cf64..5c6f18948 100644
--- a/tests/optimize/test_backtesting.py
+++ b/tests/optimize/test_backtesting.py
@@ -5,7 +5,7 @@ from collections import defaultdict
 from copy import deepcopy
 from datetime import datetime, timedelta, timezone
 from pathlib import Path
-from unittest.mock import MagicMock, PropertyMock
+from unittest.mock import ANY, MagicMock, PropertyMock
 
 import numpy as np
 import pandas as pd
@@ -795,6 +795,7 @@ def test_backtest_one(default_conf, mocker, testdatadir) -> None:
                         "order_filled_timestamp": 1517251200000,
                         "ft_is_entry": True,
                         "ft_order_tag": "",
+                        "cost": ANY,
                     },
                     {
                         "amount": 0.00957442,
@@ -803,6 +804,7 @@ def test_backtest_one(default_conf, mocker, testdatadir) -> None:
                         "order_filled_timestamp": 1517265300000,
                         "ft_is_entry": False,
                         "ft_order_tag": "roi",
+                        "cost": ANY,
                     },
                 ],
                 [
@@ -813,6 +815,7 @@ def test_backtest_one(default_conf, mocker, testdatadir) -> None:
                         "order_filled_timestamp": 1517283000000,
                         "ft_is_entry": True,
                         "ft_order_tag": "",
+                        "cost": ANY,
                     },
                     {
                         "amount": 0.0097064,
@@ -821,6 +824,7 @@ def test_backtest_one(default_conf, mocker, testdatadir) -> None:
                         "order_filled_timestamp": 1517285400000,
                         "ft_is_entry": False,
                         "ft_order_tag": "roi",
+                        "cost": ANY,
                     },
                 ],
             ],