diff --git a/core/includes/theme.inc b/core/includes/theme.inc
index e772289..22cacb3 100644
--- a/core/includes/theme.inc
+++ b/core/includes/theme.inc
@@ -1610,17 +1610,6 @@ function _template_preprocess_default_variables() {
     'logged_in' => FALSE,
   );
 
-  // drupal_is_front_page() might throw an exception.
-  try {
-    $variables['is_front'] = drupal_is_front_page();
-  }
-  catch (Exception $e) {
-    // If the database is not yet available, set default values for these
-    // variables.
-    $variables['is_front'] = FALSE;
-    $variables['db_is_active'] = FALSE;
-  }
-
   // Give modules a chance to alter the default template variables.
   \Drupal::moduleHandler()->alter('template_preprocess_default_variables', $variables);
 
@@ -1773,6 +1762,16 @@ function template_preprocess_page(&$variables) {
   $variables['site_name']         = (theme_get_setting('features.name') ? String::checkPlain($site_config->get('name')) : '');
   $variables['site_slogan']       = (theme_get_setting('features.slogan') ? Xss::filterAdmin($site_config->get('slogan')) : '');
 
+  // drupal_is_front_page() might throw an exception.
+  try {
+    $variables['is_front'] = drupal_is_front_page();
+  }
+  catch (Exception $e) {
+    // If the database is not yet available, set default values for these
+    // variables.
+    $variables['is_front'] = FALSE;
+    $variables['db_is_active'] = FALSE;
+  }
   if (!defined('MAINTENANCE_MODE')) {
     $variables['action_links']   = menu_get_local_actions();
     $variables['tabs']           = menu_local_tabs();
diff --git a/core/modules/node/templates/node.html.twig b/core/modules/node/templates/node.html.twig
index c08ab7c..a78fcb3 100644
--- a/core/modules/node/templates/node.html.twig
+++ b/core/modules/node/templates/node.html.twig
@@ -54,7 +54,6 @@
  * - page: Flag for the full page state. Will be true if view_mode is 'full'.
  * - readmore: Flag for more state. Will be true if the teaser content of the
  *   node cannot hold the main body content.
- * - is_front: Flag for front. Will be true when presented on the front page.
  * - logged_in: Flag for authenticated user status. Will be true when the
  *   current user is a logged-in member.
  * - is_admin: Flag for admin user status. Will be true when the current user