diff --git a/freqtrade/optimize/hyperopt_loss/hyperopt_loss_short_trade_dur.py b/freqtrade/optimize/hyperopt_loss/hyperopt_loss_short_trade_dur.py
index 12565f10e..6c6e0a8cb 100644
--- a/freqtrade/optimize/hyperopt_loss/hyperopt_loss_short_trade_dur.py
+++ b/freqtrade/optimize/hyperopt_loss/hyperopt_loss_short_trade_dur.py
@@ -53,4 +53,5 @@ class ShortTradeDurHyperOptLoss(IHyperOptLoss):
 
 
 # Create an alias for This to allow the legacy Method to work as well.
-DefaultHyperOptLoss = ShortTradeDurHyperOptLoss
+class DefaultHyperOptLoss(ShortTradeDurHyperOptLoss):
+    pass