diff --git a/addons/website_sale_options/views/website_sale_options_templates.xml b/addons/website_sale_options/views/website_sale_options_templates.xml
index e19b689515651..1c95d78cff114 100644
--- a/addons/website_sale_options/views/website_sale_options_templates.xml
+++ b/addons/website_sale_options/views/website_sale_options_templates.xml
@@ -11,7 +11,7 @@
 
 <template id="optional_products" inherit_id="website_sale.cart_lines" name="Optional products">
   <xpath expr="//table[@id='cart_products']/tbody//td[hasclass('td-qty')]/div" position="attributes">
-    <attribute name="t-if">not line.linked_line_id</attribute>
+    <attribute name="t-if" add="(not line.linked_line_id)" separator=" and "></attribute>
   </xpath>
   <xpath expr="//table[@id='cart_products']/tbody//tr" position="attributes">
     <attribute name="t-att-class">'optional_product info' if line.linked_line_id else None</attribute>