diff --git a/feeds.module b/feeds.module
index f5ab755..c7e0413 100644
--- a/feeds.module
+++ b/feeds.module
@@ -158,9 +158,9 @@ function template_preprocess_feeds_feed(&$variables) {
 
   $variables['page'] = $variables['view_mode'] === 'full';
 
-  $variables['date'] = drupal_render($variables['elements']['created']);
+  $variables['date'] = \Drupal::service('renderer')->render($variables['elements']['created']);
   unset($variables['elements']['created']);
-  $variables['author_name'] = drupal_render($variables['elements']['uid']);
+  $variables['author_name'] = \Drupal::service('renderer')->render($variables['elements']['uid']);
   unset($variables['elements']['uid']);
 
   $variables['url'] = $feed->url('canonical', [