diff --git a/core/modules/search/lib/Drupal/search/Controller/SearchController.php b/core/modules/search/lib/Drupal/search/Controller/SearchController.php
index 402ad53..32a5c54 100644
--- a/core/modules/search/lib/Drupal/search/Controller/SearchController.php
+++ b/core/modules/search/lib/Drupal/search/Controller/SearchController.php
@@ -94,7 +94,7 @@ public function view(Request $request, SearchPageInterface $entity, $keys = '')
     );
 
     $build['search_results'] = array(
-      '#theme' => 'item_list',
+      '#theme' => array('item_list__search_results__' . $plugin->getPluginId(), 'item_list__search_results'),
       '#items' => $results,
       '#empty' => array(
         // @todo Revisit where this help text is added.
@@ -105,8 +105,8 @@ public function view(Request $request, SearchPageInterface $entity, $keys = '')
         'class' => array(
           'search-results',
           $plugin->getPluginId() . '_search-results',
-        )
-      )
+        ),
+      ),
     );
 
     $build['pager'] = array(
diff --git a/core/modules/search/templates/search-result.html.twig b/core/modules/search/templates/search-result.html.twig
index bb27d19..732489b 100644
--- a/core/modules/search/templates/search-result.html.twig
+++ b/core/modules/search/templates/search-result.html.twig
@@ -4,7 +4,7 @@
  * Default theme implementation for displaying a single search result.
  *
  * This template renders a single search result. The list of results is
- * rendered using theme('item_list'), with suggestions of:
+ * rendered using '#theme' => 'item_list', with suggestions of:
  * - item_list__search_results__(plugin_id)
  * - item_list__search_results
  *