diff --git a/core/themes/stark/templates/form.inc/fieldset.html.twig b/core/themes/stark/templates/form.inc/fieldset.html.twig
index 979dc81..225ecfa 100644
--- a/core/themes/stark/templates/form.inc/fieldset.html.twig
+++ b/core/themes/stark/templates/form.inc/fieldset.html.twig
@@ -14,7 +14,7 @@
  */
 #}
 <fieldset class="{{ attributes.class }}" {{ attributes }}>
-  {% if title %}
+  {% if title is defined %}
     {# Always wrap fieldset legends in a SPAN for CSS positioning. #}
     <legend><span class="fieldset-legend">{{ title }}</span></legend>
   {% endif %}