diff --git a/core/modules/node/lib/Drupal/node/Plugin/Search/NodeSearch.php b/core/modules/node/lib/Drupal/node/Plugin/Search/NodeSearch.php
index bcbfff8..2dbf35d 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/Search/NodeSearch.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/Search/NodeSearch.php
@@ -549,17 +549,26 @@ public function buildConfigurationForm(array $form, array &$form_state) {
       '#title' => t('Content ranking'),
       '#open' => TRUE,
     );
-    $form['content_ranking']['#theme'] = 'node_search_admin';
     $form['content_ranking']['info'] = array(
       '#markup' => '<p><em>' . $this->t('Influence is a numeric multiplier used in ordering search results. A higher number means the corresponding factor has more influence on search results; zero means the factor is ignored. Changing these numbers does not require the search index to be rebuilt. Changes take effect immediately.') . '</em></p>'
     );
 
+    // Prepare table.
+    $header = array(t('Factor'), t('Influence'));
+    $form['content_ranking']['rankings'] = array(
+      '#type' => 'table',
+      '#header' => $header,
+    );
+
     // Note: reversed to reflect that higher number = higher ranking.
     $range = range(0, 10);
     $options = array_combine($range, $range);
     foreach ($this->getRankings() as $var => $values) {
-      $form['content_ranking']['factors']["rankings_$var"] = array(
-        '#title' => $values['title'],
+      $form['content_ranking']['rankings'][$var]['name'] = array(
+        '#markup' => $values['title'],
+        '#type' => 'markup',
+      );
+      $form['content_ranking']['rankings'][$var]['value'] = array(
         '#type' => 'select',
         '#options' => $options,
         '#default_value' => isset($this->configuration['rankings'][$var]) ? $this->configuration['rankings'][$var] : 0,
@@ -573,13 +582,12 @@ public function buildConfigurationForm(array $form, array &$form_state) {
    */
   public function submitConfigurationForm(array &$form, array &$form_state) {
     foreach ($this->getRankings() as $var => $values) {
-      if (!empty($form_state['values']["rankings_$var"])) {
-        $this->configuration['rankings'][$var] = $form_state['values']["rankings_$var"];
+      if (!empty($form_state['values']['rankings'][$var]['value'])) {
+        $this->configuration['rankings'][$var] = $form_state['values']['rankings'][$var]['value'];
       }
       else {
         unset($this->configuration['rankings'][$var]);
       }
     }
   }
-
-}
+}
\ No newline at end of file
diff --git a/core/modules/node/node.module b/core/modules/node/node.module
index 564f4c5..34d87e3 100644
--- a/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -865,40 +865,6 @@ function node_user_predelete($account) {
 }
 
 /**
- * Returns HTML for the content ranking part of the search settings admin page.
- *
- * @param $variables
- *   An associative array containing:
- *   - form: A render element representing the form.
- *
- * @see node_search_admin()
- * @ingroup themeable
- */
-function theme_node_search_admin($variables) {
-  $form = $variables['form'];
-
-  $output = drupal_render($form['info']);
-
-  $header = array(t('Factor'), t('Influence'));
-  foreach (Element::children($form['factors']) as $key) {
-    $row = array();
-    $row[] = $form['factors'][$key]['#title'];
-    $form['factors'][$key]['#title_display'] = 'invisible';
-    $row[] = drupal_render($form['factors'][$key]);
-    $rows[] = $row;
-  }
-  $table = array(
-    '#type' => 'table',
-    '#header' => $header,
-    '#rows' => $rows,
-  );
-  $output .= drupal_render($table);
-
-  $output .= drupal_render_children($form);
-  return $output;
-}
-
-/**
  * Title callback: Displays the node's title.
  *
  * @param \Drupal\node\NodeInterface $node