diff --git a/pymisp/aping.py b/pymisp/aping.py
index 6d4085e..c816bd8 100644
--- a/pymisp/aping.py
+++ b/pymisp/aping.py
@@ -1754,7 +1754,7 @@ class ExpandedPyMISP(PyMISP):
             event_id = self.__get_uuid_or_id_from_abstract_misp(event)
             organisation_id = self.__get_uuid_or_id_from_abstract_misp(organisation)
             if self._old_misp((2, 4, 114), '2020-01-01', sys._getframe().f_code.co_name):
-                # FIXME: https://github.com/MISP/MISP/issues/5055
+                # https://github.com/MISP/MISP/issues/5055
                 organisation_id = organisation.id
             data = {'event_id': event_id, 'org_id': organisation_id, 'distribution': distribution, 'message': message}
         elif event_delegation:
diff --git a/tests/testlive_comprehensive.py b/tests/testlive_comprehensive.py
index 1947e6e..91fbd71 100644
--- a/tests/testlive_comprehensive.py
+++ b/tests/testlive_comprehensive.py
@@ -1872,6 +1872,7 @@ class TestComprehensive(unittest.TestCase):
                 delegations = self.delegate_user_misp_connector.event_delegations()
                 self.assertEqual(delegations[0].id, delegation.id)
                 e = self.delegate_user_misp_connector.accept_event_delegation(delegation)
+                self.assertTrue(isinstance(e, MISPEvent), e)
                 self.assertEqual(e.info, 'Test Roles')
                 self.assertEqual(e.org.name, 'Test Org - delegate')
                 r = self.delegate_user_misp_connector.delete_event(e)
@@ -1879,6 +1880,7 @@ class TestComprehensive(unittest.TestCase):
                 e = test_roles_user_connector.add_event(base_event)
                 delegation = test_roles_user_connector.delegate_event(e, self.test_org_delegate)
                 e = test_roles_user_connector.discard_event_delegation(delegation.id)
+                self.assertTrue(isinstance(e, MISPEvent), e)
                 self.assertEqual(e.info, 'Test Roles')
                 self.assertEqual(e.org_id, int(self.test_org.id))
             finally: