diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php
index b0cbb7b..c091837 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/display/DisplayPluginBase.php
@@ -1886,7 +1886,7 @@ public function buildOptionsForm(&$form, &$form_state) {
         }
         else {
           $output .= '<p>' . t('This is the default theme template used for this display.') . '</p>';
-          $output .= '<pre>' . check_plain(file_get_contents('./' . $this->definition['theme_path'] . '/' . strtr($this->definition['theme'], '_', '-') . '.tpl.php')) . '</pre>';
+          $output .= '<pre>' . check_plain(file_get_contents('./' . $this->definition['theme_path'] . '/' . strtr($this->definition['theme'], '_', '-') . '.html.twig')) . '</pre>';
         }
 
         $form['analysis'] = array(
@@ -1906,7 +1906,7 @@ public function buildOptionsForm(&$form, &$form_state) {
         }
         else {
           $output .= '<p>' . t('This is the default theme template used for this style.') . '</p>';
-          $output .= '<pre>' . check_plain(file_get_contents('./' . $plugin->definition['theme_path'] . '/' . strtr($plugin->definition['theme'], '_', '-') . '.tpl.php')) . '</pre>';
+          $output .= '<pre>' . check_plain(file_get_contents('./' . $plugin->definition['theme_path'] . '/' . strtr($plugin->definition['theme'], '_', '-') . '.html.twig')) . '</pre>';
         }
 
         $form['analysis'] = array(
@@ -1926,7 +1926,7 @@ public function buildOptionsForm(&$form, &$form_state) {
         }
         else {
           $output .= '<p>' . t('This is the default theme template used for this row style.') . '</p>';
-          $output .= '<pre>' . check_plain(file_get_contents('./' . $plugin->definition['theme_path'] . '/' . strtr($plugin->definition['theme'], '_', '-') . '.tpl.php')) . '</pre>';
+          $output .= '<pre>' . check_plain(file_get_contents('./' . $plugin->definition['theme_path'] . '/' . strtr($plugin->definition['theme'], '_', '-') . '.html.twig')) . '</pre>';
         }
 
         $form['analysis'] = array(
@@ -1943,7 +1943,7 @@ public function buildOptionsForm(&$form, &$form_state) {
 
         // Field templates aren't registered the normal way...and they're always
         // this one, anyhow.
-        $output .= '<pre>' . check_plain(file_get_contents(drupal_get_path('module', 'views') . '/templates/views-view-field.tpl.php')) . '</pre>';
+        $output .= '<pre>' . check_plain(file_get_contents(drupal_get_path('module', 'views') . '/templates/views-view-field.html.twig')) . '</pre>';
 
         $form['analysis'] = array(
           '#markup' => '<div class="form-item">' . $output . '</div>',