diff --git a/core/includes/theme.inc b/core/includes/theme.inc
index d4950c6..db11615 100644
--- a/core/includes/theme.inc
+++ b/core/includes/theme.inc
@@ -3184,7 +3184,7 @@ function drupal_common_theme() {
     ),
     'mark' => array(
       'variables' => array('type' => MARK_NEW),
-      'template' => 'mark'
+      'template' => 'mark',
     ),
     'item_list' => array(
       'variables' => array('items' => array(), 'title' => '', 'type' => 'ul', 'attributes' => array()),
diff --git a/core/modules/system/templates/mark.html.twig b/core/modules/system/templates/mark.html.twig
index 72254b7..87e6cdc 100644
--- a/core/modules/system/templates/mark.html.twig
+++ b/core/modules/system/templates/mark.html.twig
@@ -9,7 +9,7 @@
  *   - MARK_NEW
  *   - MARK_UPDATED
  *   - MARK_READ
- * - logged_in: TRUE if the user is logged in, else FALSE.
+ * - logged_in: A flag indicating whether the user is logged in or not.
  *
  * @see template_preprocess()
  * @see template_preprocess_mark()