diff --git a/core/modules/aggregator/tests/src/Functional/UpdateFeedItemTest.php b/core/modules/aggregator/tests/src/Functional/UpdateFeedItemTest.php
index 2598faf104..fd2a742443 100644
--- a/core/modules/aggregator/tests/src/Functional/UpdateFeedItemTest.php
+++ b/core/modules/aggregator/tests/src/Functional/UpdateFeedItemTest.php
@@ -45,11 +45,11 @@ public function testUpdateFeedItem() {
     $this->assert(isset($view_link), 'The message area contains a link to a feed');
 
     $fids = \Drupal::entityQuery('aggregator_feed')->condition('url', $edit['url[0][value]'])->execute();
-    $feed = Feed::load($fids[0]);
+    $feed = Feed::load(array_values($fids)[0]);
 
     $feed->refreshItems();
     $iids = \Drupal::entityQuery('aggregator_item')->condition('fid', $feed->id())->execute();
-    $before = Item::load($iids[0])->getPostedTime();
+    $before = Item::load(array_values($iids)[0])->getPostedTime();
 
     // Sleep for 3 second.
     sleep(3);
@@ -61,7 +61,7 @@ public function testUpdateFeedItem() {
       ->save();
     $feed->refreshItems();
 
-    $after = Item::load($iids[0])->getPostedTime();
+    $after = Item::load(array_values($iids)[0])->getPostedTime();
     $this->assertTrue($before === $after, format_string('Publish timestamp of feed item was not updated (@before === @after)', ['@before' => $before, '@after' => $after]));
 
     // Make sure updating items works even after uninstalling a module