diff --git a/project_task_subtask/models/project_task_subtask.py b/project_task_subtask/models/project_task_subtask.py
index b62ab89..fd0c11d 100644
--- a/project_task_subtask/models/project_task_subtask.py
+++ b/project_task_subtask/models/project_task_subtask.py
@@ -1,5 +1,5 @@
 from odoo import api, fields, models
-from odoo.exceptions import Warning as UserError
+from odoo.exceptions import UserError
 from odoo.tools import html_escape
 from odoo.tools.translate import _