diff --git a/templates/system-themes-page.html.twig b/templates/system-themes-page.html.twig
index 78b6095..1108c7f 100644
--- a/templates/system-themes-page.html.twig
+++ b/templates/system-themes-page.html.twig
@@ -82,7 +82,7 @@
             {% endif %}
             <div class="card__content-wrapper">
               <div class="card__content">
-                <h3{{ create_attribute({ 'id': theme.title_id }).addClass(theme_title_classes) }} id={{ theme.title_id }}>
+                <h3{{ create_attribute({'id': theme.title_id}).addClass(theme_title_classes) }} id={{ theme.title_id }}>
                   {{- theme.name }} {{ theme.version -}}
                   {% if theme.notes %}
                     ({{ theme.notes|safe_join(', ') }})
@@ -90,7 +90,7 @@
                 </h3>
 
                 {% if theme.description and theme.description_id %}
-                  <div{{ create_attribute({ 'id': theme.description_id ?: null }).addClass(theme_description_classes) }}>
+                  <div{{ create_attribute({'id': theme.description_id ?: null}).addClass(theme_description_classes) }}>
                     {{ theme.description }}
                   </div>
                 {%- endif -%}