diff --git a/addons/sale/views/sale_portal_templates.xml b/addons/sale/views/sale_portal_templates.xml
index 38f14849235..5155e4eff31 100644
--- a/addons/sale/views/sale_portal_templates.xml
+++ b/addons/sale/views/sale_portal_templates.xml
@@ -460,6 +460,7 @@
                                     </td>
                                     <td t-attf-class="text-right {{ 'd-none d-sm-table-cell' if report_type == 'html' else '' }}">
                                         <div
+                                            t-if="line.discount &gt;= 0"
                                             t-field="line.price_unit"
                                             t-options='{"widget": "monetary", "display_currency": sale_order.pricelist_id.currency_id}'
                                             t-att-style="line.discount and 'text-decoration: line-through' or None"
@@ -470,7 +471,7 @@
                                         </div>
                                     </td>
                                     <td t-if="display_discount" t-attf-class="text-right {{ 'd-none d-sm-table-cell' if report_type == 'html' else '' }}">
-                                        <strong t-if="line.discount" class="text-info">
+                                        <strong t-if="line.discount &gt; 0" class="text-info">
                                             <t t-esc="((line.discount % 1) and '%s' or '%d') % line.discount"/>% discount
                                         </strong>
                                     </td>