diff --git a/docs/_includes/sidebar-group.njk b/docs/_includes/sidebar-group.njk
index cd8332013..c49ef48da 100644
--- a/docs/_includes/sidebar-group.njk
+++ b/docs/_includes/sidebar-group.njk
@@ -1,7 +1,7 @@
 {# Some collections (like "patterns") will not have any items in the alpha build for example. So this checks to make sure the collection exists. #}
 {% if collections[tag] -%}
   {% set groupUrl %}/docs/{{ tag }}/{% endset %}
-  <wa-details {{ (tag in (tags or [])) or (groupUrl in page.url) | attr('open') }}>
+  <wa-details {{ ((tag in (tags or [])) or (groupUrl in page.url)) | attr('open') }}>
     <h2 slot="summary">
       {% if groupUrl | getCollectionItemFromUrl %}
         <a href="{{ groupUrl }}" title="Overview">{{ title or (tag | capitalize) }}