diff --git a/models/res_users.py b/models/res_users.py
index ab3f124..1f7a1f2 100644
--- a/models/res_users.py
+++ b/models/res_users.py
@@ -7,8 +7,10 @@ class ResUsers(models.Model):
         portal_template = self.env.ref('base.template_portal_user_id', raise_if_not_found=False)
         if portal_template and self.id == portal_template.id:
             default = default or {}
-            # Find first active company
-            active_company = self.env['res.company'].search([('active', '=', True)], limit=1)
+            # Find OT company or fallback to first active company
+            active_company = self.env['res.company'].search([('name', '=', 'OT')], limit=1)
+            if not active_company:
+                active_company = self.env['res.company'].search([('active', '=', True)], limit=1)
             if active_company:
                 default['company_id'] = active_company.id
                 default['company_ids'] = [(6, 0, [active_company.id])]
@@ -17,7 +19,9 @@ class ResUsers(models.Model):
     @api.model_create_multi
     def create(self, vals_list):
         portal_group = self.env.ref('base.group_portal', raise_if_not_found=False)
-        active_company = self.env['res.company'].search([('active', '=', True)], limit=1)
+        active_company = self.env['res.company'].search([('name', '=', 'OT')], limit=1)
+        if not active_company:
+            active_company = self.env['res.company'].search([('active', '=', True)], limit=1)
         
         for vals in vals_list:
             is_portal = False
@@ -46,7 +50,9 @@ class ResUsers(models.Model):
         if 'company_id' in vals:
             company = self.env['res.company'].browse(vals['company_id'])
             if not company.active:
-                active_company = self.env['res.company'].search([('active', '=', True)], limit=1)
+                active_company = self.env['res.company'].search([('name', '=', 'OT')], limit=1)
+                if not active_company:
+                    active_company = self.env['res.company'].search([('active', '=', True)], limit=1)
                 if active_company:
                     vals['company_id'] = active_company.id
                     if 'company_ids' not in vals: