diff --git a/api/tests/routes/object_modifications.py b/api/tests/routes/object_modifications.py
index a6575c5cfb9db7283367b68479bb79232c91a360..1df90b62b1d8473a1fbd699a220af8b379cd458f 100644
--- a/api/tests/routes/object_modifications.py
+++ b/api/tests/routes/object_modifications.py
@@ -1130,11 +1130,11 @@ class ObjectModificationsTest(ApiTest):
             },
             use_moderator_login=True
         )
-        self.assert_field_has_value(self.do_json_request(
+        self.assertEqual(set(self.get_field_value(self.do_json_request(
             "GET",
             "/object_management/course/2/configuration",
             use_moderator_login=True
-        )[1], "responsible_users_ids", [42, 43])
+        )[1], "responsible_users_ids")), {42, 43})
         self.do_json_request(
             "PATCH",
             "/object_management/course/2/configuration",