diff --git a/addons/point_of_sale/static/src/xml/SaleDetailsReport.xml b/addons/point_of_sale/static/src/xml/SaleDetailsReport.xml
index d30a61dd84c..53b56668f57 100644
--- a/addons/point_of_sale/static/src/xml/SaleDetailsReport.xml
+++ b/addons/point_of_sale/static/src/xml/SaleDetailsReport.xml
@@ -19,7 +19,7 @@
 
             <div class="orderlines">
                 <t t-foreach="products" t-as="category" t-key="category['name']">
-                    <t t-foreach="category['products']" t-as="line" t-key="line['product_id']">
+                    <t t-foreach="category['products']" t-as="line" t-key="line_index">
                         <div class="responsive-price">
                             <t t-esc="line['product_name'].substr(0,20)" />
                             <span class="pos-receipt-right-align">
@@ -48,7 +48,7 @@
 
             <div class="orderlines">
                 <t t-foreach="refund_products" t-as="category" t-key="category['name']">
-                    <t t-foreach="category['products']" t-as="line" t-key="line['product_id']">
+                    <t t-foreach="category['products']" t-as="line" t-key="line_index">
                         <div class="responsive-price">
                             <t t-esc="line['product_name'].substr(0,20)" />
                             <span class="pos-receipt-right-align">