diff --git a/core/modules/system/templates/container.html.twig b/core/modules/system/templates/container.html.twig
index 167965c..2f71632 100644
--- a/core/modules/system/templates/container.html.twig
+++ b/core/modules/system/templates/container.html.twig
@@ -20,7 +20,6 @@
 {%
   set classes = [
     has_parent ? 'js-form-wrapper',
-    has_parent ? 'form-wrapper',
   ]
 %}
 <div{{ attributes.addClass(classes) }}>{{ children }}</div>