diff --git a/addons/website_sale_stock_options/views/website_sale_stock_templates.xml b/addons/website_sale_stock_options/views/website_sale_stock_templates.xml
index 8f34365277f..d5709c8556c 100644
--- a/addons/website_sale_stock_options/views/website_sale_stock_templates.xml
+++ b/addons/website_sale_stock_options/views/website_sale_stock_templates.xml
@@ -3,7 +3,7 @@
     <!-- Shopping Cart Lines -->
     <template id="website_sale_stock_modal" inherit_id="website_sale_options.modal" name="Stocks Modal">
         <xpath expr="//input[@type='text'][hasclass('quantity')]" position="attributes">
-          <attribute name='t-att-data-max'>max(product.sudo().virtual_available - product.cart_qty, 1)</attribute>
+          <attribute name='t-att-data-max'>max(product.sudo().virtual_available - product.cart_qty, 1) if product.type == "product" and product.inventory_availability in ["always", "threshold"] else None</attribute>
         </xpath>
         <xpath expr="//div[hasclass('css_quantity')]" position="after">
           <div class='availability_messages'/>