diff --git a/core/modules/update/lib/Drupal/update/Tests/UpdateUploadTest.php b/core/modules/update/lib/Drupal/update/Tests/UpdateUploadTest.php
index e19fd06..fef6904 100644
--- a/core/modules/update/lib/Drupal/update/Tests/UpdateUploadTest.php
+++ b/core/modules/update/lib/Drupal/update/Tests/UpdateUploadTest.php
@@ -93,24 +93,32 @@ function testUpdateManagerCoreSecurityUpdateMessages() {
     // about core missing a security update.
 
     $this->drupalGet('admin/modules/install');
+    $this->assertResponse(200);
     $this->assertNoText(t('There is a security update available for your version of Drupal.'));
 
     $this->drupalGet('admin/modules/update');
+    $this->assertResponse(200);
     $this->assertNoText(t('There is a security update available for your version of Drupal.'));
 
     $this->drupalGet('admin/appearance/install');
+    $this->assertResponse(200);
     $this->assertNoText(t('There is a security update available for your version of Drupal.'));
 
     $this->drupalGet('admin/appearance/update');
+    $this->assertResponse(200);
     $this->assertNoText(t('There is a security update available for your version of Drupal.'));
 
     $this->drupalGet('admin/reports/updates/install');
+    $this->assertResponse(200);
     $this->assertNoText(t('There is a security update available for your version of Drupal.'));
 
     $this->drupalGet('admin/reports/updates/update');
+    $this->assertResponse(200);
     $this->assertNoText(t('There is a security update available for your version of Drupal.'));
 
     $this->drupalGet('admin/update/ready');
+    $this->assertResponse(200);
     $this->assertNoText(t('There is a security update available for your version of Drupal.'));
   }
+
 }