diff --git a/quapy/tests/test_hierarchy.py b/quapy/tests/test_hierarchy.py
index 450e3cf..7a2d07e 100644
--- a/quapy/tests/test_hierarchy.py
+++ b/quapy/tests/test_hierarchy.py
@@ -21,6 +21,7 @@ class HierarchyTestCase(unittest.TestCase):
         quantifiers = [cls for cls in classes if issubclass(cls, BaseQuantifier)]
         quantifiers = [cls for cls in quantifiers if issubclass(cls, AggregativeQuantifier)]
         quantifiers = [cls for cls in quantifiers if not inspect.isabstract(cls) ]
+        quantifiers = [cls for cls in quantifiers if cls is not OneVsAllAggregative]
 
         for cls in quantifiers:
             self.assertIn(cls, AGGREGATIVE_METHODS)