diff --git a/exp_timesheet_missing_reminder/tests/test_exp_timesheet_reminder.py b/exp_timesheet_missing_reminder/tests/test_exp_timesheet_reminder.py
index 74c6d53..997ffd1 100644
--- a/exp_timesheet_missing_reminder/tests/test_exp_timesheet_reminder.py
+++ b/exp_timesheet_missing_reminder/tests/test_exp_timesheet_reminder.py
@@ -13,9 +13,21 @@ class TestActionSendLateEmail(TransactionCase):
     def setUpClass(cls):
         super().setUpClass()
 
-        cls.calendar = cls.env.ref('resource.resource_calendar_standard_12hour', raise_if_not_found=False)
-        if not cls.calendar:
-            cls.calendar = cls.env['resource.calendar'].search([], limit=1)
+        cls.calendar = cls.env['resource.calendar'].create({
+            'name': 'Test Timesheet Calendar',
+            'check_timesheet': True,
+            'timesheet_day_before': 7,
+            'timesheet_hour_before': 12,
+
+        })
+
+        cls.env['resource.calendar.attendance'].create({
+            'name': 'Test Morning',
+            'calendar_id': cls.calendar.id,
+            'dayofweek': '0',  # Monday
+            'hour_from': 8.0,
+            'hour_to': 16.0,
+        })
 
         cls.test_user = cls.env['res.users'].create({
             'name': 'Test Timesheet User',
@@ -28,7 +40,8 @@ class TestActionSendLateEmail(TransactionCase):
             'user_id': cls.test_user.id,
             'work_email': 'test_timesheet@example.com',
             'skipp_timesheet_reminder': False,
-            'resource_calendar_id': cls.calendar.id if cls.calendar else False,
+            'resource_calendar_id': cls.calendar.id,
+            'state': 'open',
         })
 
         cls.project = cls.env['project.project'].create({'name': 'Test Project'})