diff --git a/addons/project_timesheet_holidays/models/hr_holidays.py b/addons/project_timesheet_holidays/models/hr_holidays.py
index 2717a4eab59..a2d2457f573 100644
--- a/addons/project_timesheet_holidays/models/hr_holidays.py
+++ b/addons/project_timesheet_holidays/models/hr_holidays.py
@@ -61,5 +61,6 @@ class Holidays(models.Model):
     def action_refuse(self):
         """ Remove the timesheets linked to the refused holidays """
         result = super(Holidays, self).action_refuse()
+        self.mapped('timesheet_ids').write({'holiday_id': False})
         self.mapped('timesheet_ids').unlink()
         return result
diff --git a/addons/project_timesheet_holidays/tests/test_timesheet_holidays.py b/addons/project_timesheet_holidays/tests/test_timesheet_holidays.py
index f49cf00ed14..f98817fdeec 100644
--- a/addons/project_timesheet_holidays/tests/test_timesheet_holidays.py
+++ b/addons/project_timesheet_holidays/tests/test_timesheet_holidays.py
@@ -72,6 +72,10 @@ class TestTimesheetHolidays(TestTimesheet):
         holiday.sudo().action_validate()
         self.assertEquals(len(holiday.timesheet_ids), number_of_days, 'Number of generated timesheets should be the same as the leave duration (1 per day)')
 
+        # manager refuse the leave
+        holiday.sudo().action_refuse()
+        self.assertEquals(len(holiday.timesheet_ids), 0, 'Number of linked timesheets should be zero, since the leave is refused.')
+
     def test_validate_without_timesheet(self):
         # employee creates a leave request
         number_of_days = (self.leave_end_datetime - self.leave_start_datetime).days