diff --git a/freqtrade/optimize/backtesting.py b/freqtrade/optimize/backtesting.py
index 471fdca81..c9bdf4c65 100644
--- a/freqtrade/optimize/backtesting.py
+++ b/freqtrade/optimize/backtesting.py
@@ -329,15 +329,15 @@ class Backtesting:
         else:
             self.detail_data = {}
         if self.trading_mode == TradingMode.FUTURES:
-            self.funding_fee_timeframe: str = self.exchange.get_option("funding_fee_timeframe")
-            self.funding_fee_timeframe_secs: int = timeframe_to_seconds(self.funding_fee_timeframe)
+            funding_fee_timeframe: str = self.exchange.get_option("funding_fee_timeframe")
+            self.funding_fee_timeframe_secs: int = timeframe_to_seconds(funding_fee_timeframe)
             mark_timeframe: str = self.exchange.get_option("mark_ohlcv_timeframe")
 
             # Load additional futures data.
             funding_rates_dict = history.load_data(
                 datadir=self.config["datadir"],
                 pairs=self.pairlists.whitelist,
-                timeframe=self.funding_fee_timeframe,
+                timeframe=funding_fee_timeframe,
                 timerange=self.timerange,
                 startup_candles=0,
                 fail_without_data=True,