diff --git a/tests/functional/factories.py b/tests/functional/factories.py
index b3479238338abe3bd577f76f3980a6e7f91e4b94..febdd62676e5b498dd278d98b86ba7daf6e8b31b 100644
--- a/tests/functional/factories.py
+++ b/tests/functional/factories.py
@@ -182,6 +182,6 @@ class CnameFactory(factory.alchemy.SQLAlchemyModelFactory):
         sqlalchemy_session = common.Session
         sqlalchemy_session_persistence = 'commit'
 
-    name = factory.Sequence(lambda n: f'host{n}.example.org')
+    name = factory.Sequence(lambda n: f'host{n}')
     interface = factory.SubFactory(InterfaceFactory)
     user = factory.SubFactory(UserFactory)
diff --git a/tests/functional/test_api.py b/tests/functional/test_api.py
index 859f115de91139828aa89a4cbbed69fc210625f6..7faab03e208bd68c7ac524ae774d546c10085329 100644
--- a/tests/functional/test_api.py
+++ b/tests/functional/test_api.py
@@ -871,7 +871,7 @@ def test_create_cname(client, interface, admin_token):
     # check that name and interface_id are mandatory
     response = post(client, f'{API_URL}/network/cnames', data={}, token=admin_token)
     check_response_message(response, "Missing mandatory field 'name'", 422)
-    response = post(client, f'{API_URL}/network/cnames', data={'name': 'myhost.example.org'}, token=admin_token)
+    response = post(client, f'{API_URL}/network/cnames', data={'name': 'myhost'}, token=admin_token)
     check_response_message(response, "Missing mandatory field 'interface_id'", 422)
     response = post(client, f'{API_URL}/network/cnames', data={'interface_id': interface.id}, token=admin_token)
     check_response_message(response, "Missing mandatory field 'name'", 422)