diff --git a/addons/hr_timesheet_sheet/hr_timesheet_sheet.py b/addons/hr_timesheet_sheet/hr_timesheet_sheet.py
index ebcf1996764..78aec8304bf 100644
--- a/addons/hr_timesheet_sheet/hr_timesheet_sheet.py
+++ b/addons/hr_timesheet_sheet/hr_timesheet_sheet.py
@@ -664,8 +664,7 @@ class res_company(osv.osv):
     _inherit = 'res.company'
     _columns = {
         'timesheet_range': fields.selection(
-            [('day','Day'),('week','Week'),('month','Month'),('year','Year')], 'Timeshet range',
-            required=True),
+            [('day','Day'),('week','Week'),('month','Month'),('year','Year')], 'Timeshet range'),
         'timesheet_max_difference': fields.float('Timesheet allowed difference',
             help="Allowed difference between the sign in/out and the timesheet " \
                  "computation for one sheet. Set this to 0 if you do not want any control."),