diff --git a/core/modules/user/src/Tests/UserUsernameTest.php b/core/modules/user/src/Tests/UserUsernameTest.php
index d63e51f..d349d84 100644
--- a/core/modules/user/src/Tests/UserUsernameTest.php
+++ b/core/modules/user/src/Tests/UserUsernameTest.php
@@ -130,9 +130,7 @@ public function testTruncatedCommentAuthorName() {
    */
   public function testTruncatedWhosNewName() {
     // Enable Who's New block.
-    $this->drupalPlaceBlock('views_block:who_s_new-block_1');
-
-    $this->drupalGet('<front>');
+    $this->drupalPlaceBlock('views_block:who_s_new-block_1', array('cache' => array('max_age' => 0)));
 
     // The Who's new block requires a last access to be set.
     // Log the users in for them to show up.
@@ -142,6 +140,7 @@ public function testTruncatedWhosNewName() {
     // Log user out to prevent a false negative.
     $this->drupalLogout();
 
+    $this->drupalGet('<front>');
     $this->assertText(SafeMarkup::checkPlain($this->userShortName->getUsername()), 'Untruncated username found.');
     $this->assertNoText(SafeMarkup::checkPlain($this->userLongName->getUsername()), 'Untruncated username not found.');
     $this->assertText(SafeMarkup::checkPlain(Unicode::truncate($this->userLongName->getUsername(), 29, FALSE, TRUE)), 'Truncated username found.');