diff --git a/tests/optimize/test_backtesting.py b/tests/optimize/test_backtesting.py
index 0a8d2fb45..e051e6b3c 100644
--- a/tests/optimize/test_backtesting.py
+++ b/tests/optimize/test_backtesting.py
@@ -1888,7 +1888,9 @@ def test_backtest_multi_pair_long_short_switch(
     if use_detail:
         default_conf_usdt["timeframe_detail"] = "1m"
 
-    mocker.patch(f"{EXMS}.price_to_precision", lambda s, x, y, **kwargs: y)
+    mocker.patch(
+        "freqtrade.optimize.backtesting.price_to_precision", lambda price, *args, **kwargs: price
+    )
     mocker.patch(f"{EXMS}.get_min_pair_stake_amount", return_value=0.00001)
     mocker.patch(f"{EXMS}.get_max_pair_stake_amount", return_value=float("inf"))
     mocker.patch(f"{EXMS}.get_fee", fee)