diff --git a/odoo/addons/base/models/res_partner.py b/odoo/addons/base/models/res_partner.py
index a50362deefa..d7481b3969f 100644
--- a/odoo/addons/base/models/res_partner.py
+++ b/odoo/addons/base/models/res_partner.py
@@ -169,7 +169,7 @@ class Partner(models.Model):
 
     tz_offset = fields.Char(compute='_compute_tz_offset', string='Timezone offset', invisible=True)
     user_id = fields.Many2one('res.users', string='Salesperson',
-      help='The internal user in charge of this contact.', domain=lambda self: [('groups_id', 'in', self.env.ref('base.group_user').id)])
+      help='The internal user in charge of this contact.')
     vat = fields.Char(string='Tax ID', index=True, help="The Tax Identification Number. Complete it if the contact is subjected to government taxes. Used in some legal statements.")
     same_vat_partner_id = fields.Many2one('res.partner', string='Partner with same Tax ID', compute='_compute_same_vat_partner_id', store=False)
     bank_ids = fields.One2many('res.partner.bank', 'partner_id', string='Banks')