diff --git a/skpro/model_selection/_tuning.py b/skpro/model_selection/_tuning.py
index dbac1b22c..17bb37ec1 100644
--- a/skpro/model_selection/_tuning.py
+++ b/skpro/model_selection/_tuning.py
@@ -108,7 +108,7 @@ def _fit(self, X, y, C=None):
 
         # scoring = check_scoring(self.scoring, obj=self)
         scoring = self.scoring
-        scoring_name = f"test_{scoring.name}"
+        scoring_name = f"test_{scoring.name}" if scoring is not None else "test_CPRS"
 
         backend = self.backend
         backend_params = self.backend_params if self.backend_params else {}