diff --git a/addons/point_of_sale/models/pos_config.py b/addons/point_of_sale/models/pos_config.py
index dac3f2f990b..0a9e76ac8ab 100644
--- a/addons/point_of_sale/models/pos_config.py
+++ b/addons/point_of_sale/models/pos_config.py
@@ -203,10 +203,11 @@ class PosConfig(models.Model):
     def name_get(self):
         result = []
         for config in self:
-            if (not config.session_ids) or (config.session_ids[0].state == 'closed'):
+            last_session = self.env['pos.session'].search([('config_id', '=', config.id)], limit=1)
+            if (not last_session) or (last_session.state == 'closed'):
                 result.append((config.id, config.name + ' (' + _('not used') + ')'))
                 continue
-            result.append((config.id, config.name + ' (' + config.session_ids[0].user_id.name + ')'))
+            result.append((config.id, config.name + ' (' + last_session.user_id.name + ')'))
         return result
 
     @api.model