diff --git a/nomenclature/processor/data_validator.py b/nomenclature/processor/data_validator.py
index 1cb9973f..debf0e1a 100644
--- a/nomenclature/processor/data_validator.py
+++ b/nomenclature/processor/data_validator.py
@@ -60,9 +60,9 @@ def criteria(self):
             exclude_unset=True,
             exclude=["warning_level", "lower_bound", "upper_bound"],
         )
-      
 
-class DataValidationCriteriaBounds(IamcDataFilter):
+
+class DataValidationCriteriaBounds(DataValidationCriteria):
     upper_bound: float | None = None
     lower_bound: float | None = None