diff --git a/addons/point_of_sale/controllers/main.py b/addons/point_of_sale/controllers/main.py
index d2119bef036..bdcd7555118 100644
--- a/addons/point_of_sale/controllers/main.py
+++ b/addons/point_of_sale/controllers/main.py
@@ -34,12 +34,12 @@ class PosController(http.Controller):
         pos_session = request.env['pos.session'].sudo().search(domain, limit=1)
         if not pos_session:
             return werkzeug.utils.redirect('/web#action=point_of_sale.action_client_pos_menu')
-        pos_session.login()
         # The POS only work in one company, so we enforce the one of the session in the context
         session_info = request.env['ir.http'].session_info()
         session_info['user_context']['allowed_company_ids'] = pos_session.company_id.ids
         context = {
-            'session_info': session_info
+            'session_info': session_info,
+            'login_number': pos_session.login(),
         }
         return request.render('point_of_sale.index', qcontext=context)
 
diff --git a/addons/point_of_sale/models/pos_session.py b/addons/point_of_sale/models/pos_session.py
index 36c779eac79..448f6423101 100644
--- a/addons/point_of_sale/models/pos_session.py
+++ b/addons/point_of_sale/models/pos_session.py
@@ -220,9 +220,11 @@ class PosSession(models.Model):
 
     def login(self):
         self.ensure_one()
+        login_number = self.login_number + 1
         self.write({
-            'login_number': self.login_number + 1,
+            'login_number': login_number,
         })
+        return login_number
 
     def action_pos_session_open(self):
         # second browse because we need to refetch the data from the DB for cash_register_id
diff --git a/addons/point_of_sale/static/src/js/models.js b/addons/point_of_sale/static/src/js/models.js
index 993db43141a..bb34b3dca30 100644
--- a/addons/point_of_sale/static/src/js/models.js
+++ b/addons/point_of_sale/static/src/js/models.js
@@ -242,7 +242,7 @@ exports.PosModel = Backbone.Model.extend({
         },
     },{
         model:  'pos.session',
-        fields: ['id', 'name', 'user_id', 'config_id', 'start_at', 'stop_at', 'sequence_number', 'login_number', 'payment_method_ids'],
+        fields: ['id', 'name', 'user_id', 'config_id', 'start_at', 'stop_at', 'sequence_number', 'payment_method_ids'],
         domain: function(self){
             var domain = [
                 ['state','=','opened'],
@@ -253,6 +253,7 @@ exports.PosModel = Backbone.Model.extend({
         },
         loaded: function(self, pos_sessions, tmp){
             self.pos_session = pos_sessions[0];
+            self.pos_session.login_number = odoo.login_number;
             self.config_id = self.config_id || self.pos_session && self.pos_session.config_id[0];
             tmp.payment_method_ids = pos_sessions[0].payment_method_ids;
         },
diff --git a/addons/point_of_sale/views/pos_templates.xml b/addons/point_of_sale/views/pos_templates.xml
index 5ff4b1f1a04..ea9bb99f835 100644
--- a/addons/point_of_sale/views/pos_templates.xml
+++ b/addons/point_of_sale/views/pos_templates.xml
@@ -31,6 +31,7 @@
             var odoo = <t t-raw="json.dumps({
                 'csrf_token': request.csrf_token(None),
                 'session_info': session_info,
+                'login_number': login_number,
                 'debug': debug,
             })"/>;
         </script>