diff --git a/addons/point_of_sale/models/pos_session.py b/addons/point_of_sale/models/pos_session.py
index df86a589ef9..8c0692f6a76 100644
--- a/addons/point_of_sale/models/pos_session.py
+++ b/addons/point_of_sale/models/pos_session.py
@@ -1795,6 +1795,30 @@ class PosSession(models.Model):
             domain = [('id', '=', self.config_id.pricelist_id.id)]
         return {'search_params': {'domain': domain, 'fields': ['name', 'display_name', 'discount_policy']}}
 
+    def _product_pricelist_item_fields(self):
+        return [
+                'id',
+                'product_tmpl_id',
+                'product_id',
+                'pricelist_id',
+                'price_surcharge',
+                'price_discount',
+                'price_round',
+                'price_min_margin',
+                'price_max_margin',
+                'company_id',
+                'currency_id',
+                'date_start',
+                'date_end',
+                'compute_price',
+                'fixed_price',
+                'percent_price',
+                'base_pricelist_id',
+                'base',
+                'categ_id',
+                'min_quantity',
+                ]
+
     def _get_pos_ui_product_pricelist(self, params):
         pricelists = self.env['product.pricelist'].search_read(**params['search_params'])
         for pricelist in pricelists:
@@ -1802,9 +1826,8 @@ class PosSession(models.Model):
 
         pricelist_by_id = {pricelist['id']: pricelist for pricelist in pricelists}
         pricelist_item_domain = [('pricelist_id', 'in', [p['id'] for p in pricelists])]
-        for item in self.env['product.pricelist.item'].search_read(pricelist_item_domain, []):
+        for item in self.env['product.pricelist.item'].search_read(pricelist_item_domain, self._product_pricelist_item_fields()):
             pricelist_by_id[item['pricelist_id'][0]]['items'].append(item)
-            item['base_pricelist'] = pricelist_by_id.get(item['base_pricelist_id'][0]) if item['base_pricelist_id'] else None
 
         return pricelists
 
diff --git a/addons/point_of_sale/static/src/js/models.js b/addons/point_of_sale/static/src/js/models.js
index 65a722e0aef..e7b86e15036 100644
--- a/addons/point_of_sale/static/src/js/models.js
+++ b/addons/point_of_sale/static/src/js/models.js
@@ -1409,7 +1409,11 @@ class Product extends PosModel {
             }
 
             if (rule.base === 'pricelist') {
-                price = self.get_price(rule.base_pricelist, quantity);
+                let base_pricelist = _.find(self.pos.pricelists, function (pricelist) {
+                    return pricelist.id === rule.base_pricelist_id[0];});
+                if (base_pricelist) {
+                    price = self.get_price(base_pricelist, quantity);
+                }
             } else if (rule.base === 'standard_price') {
                 price = self.standard_price;
             }