diff --git a/freqtrade/optimize/backtest_caching.py b/freqtrade/optimize/backtest_caching.py
index 7143da006..9c3e2f343 100644
--- a/freqtrade/optimize/backtest_caching.py
+++ b/freqtrade/optimize/backtest_caching.py
@@ -40,4 +40,4 @@ def get_strategy_run_id(strategy) -> str:
 def get_backtest_metadata_filename(filename: Path | str) -> Path:
     """Return metadata filename for specified backtest results file."""
     filename = Path(filename)
-    return filename.parent / Path(f"{filename.stem}.meta{filename.suffix}")
+    return filename.parent / Path(f"{filename.stem}.meta.json")