diff --git a/product/CMFActivity/tests/testCMFActivity.py b/product/CMFActivity/tests/testCMFActivity.py
index 9ec678412416b039536b6d7f8faa2f6e67c8a77b..89276244dc126c60336bd41f6d31eaedbe4a7b28 100644
--- a/product/CMFActivity/tests/testCMFActivity.py
+++ b/product/CMFActivity/tests/testCMFActivity.py
@@ -2030,7 +2030,7 @@ class TestCMFActivity(ERP5TypeTestCase):
       self.flushAllActivities(silent=1, loop_size=100)
       self.assertEquals(activity_tool.countMessage(method_id='dummy_activity'), 0)
     finally:
-      dellatr(Organisation, 'modifySQLAndFail')
+      delattr(Organisation, 'modifySQLAndFail')
 
   def test_85_MessagePathMustBeATuple(self, quiet=0, run=run_all_test):
     """