diff --git a/freqtrade/optimize/backtesting.py b/freqtrade/optimize/backtesting.py
index 1952c4fe7..2b7e048bd 100644
--- a/freqtrade/optimize/backtesting.py
+++ b/freqtrade/optimize/backtesting.py
@@ -134,8 +134,12 @@ class Backtesting:
 
         if config.get('fee', None) is not None:
             self.fee = config['fee']
+            logger.info(f"Using fee {self.fee:.4%} from config.")
         else:
-            self.fee = self.exchange.get_fee(symbol=self.pairlists.whitelist[0])
+            fees = [self.exchange.get_fee(symbol=self.pairlists.whitelist[0], taker_or_maker=mot)
+                    for mot in ('taker', 'maker')]
+            self.fee = max(fee for fee in fees if fee is not None)
+            logger.info(f"Using fee {self.fee:.4%} - worst case fee from exchange (lowest tier).")
         self.precision_mode = self.exchange.precisionMode
 
         if self.config.get('freqai_backtest_live_models', False):