diff --git a/addons/sale/static/src/js/variant_mixin.js b/addons/sale/static/src/js/variant_mixin.js
index 147a54a5e79..ff4007f9b0b 100644
--- a/addons/sale/static/src/js/variant_mixin.js
+++ b/addons/sale/static/src/js/variant_mixin.js
@@ -341,6 +341,7 @@ var VariantMixin = {
         $parent
             .find('option, input, label')
             .removeClass('css_not_available')
+            .prop('disabled', false)
             .attr('title', '')
             .data('excluded-by', '');
 
@@ -413,6 +414,7 @@ var VariantMixin = {
             .find('option[value=' + attributeValueId + '], input[value=' + attributeValueId + ']');
         $input.addClass('css_not_available');
         $input.closest('label').addClass('css_not_available');
+        $input.prop('disabled', true);
 
         if (excludedBy && attributeNames) {
             var $target = $input.is('option') ? $input : $input.closest('label').add($input);