diff --git a/core/modules/simpletest/src/Tests/UiPhpUnitOutputTest.php b/core/modules/simpletest/src/Tests/UiPhpUnitOutputTest.php
index 3555d59..591e40c 100644
--- a/core/modules/simpletest/src/Tests/UiPhpUnitOutputTest.php
+++ b/core/modules/simpletest/src/Tests/UiPhpUnitOutputTest.php
@@ -37,11 +37,11 @@ public function testOutput() {
 
     // Check that there are <br> tags for the HTML output by
     // SimpletestUiPrinter.
-    $this->assertEqual($output[9], 'HTML output was generated<br />');
+    $this->assertEqual($output[18], 'HTML output was generated<br />');
     // @todo Remove this, just looking what is different on the testbot.
     $this->assertEqual([], $output);
     // Check that URLs are printed as HTML links.
-    $this->assertIdentical(strpos($output[10], '<a href="http'), 0);
+    $this->assertIdentical(strpos($output[19], '<a href="http'), 0);
   }
 
 }
diff --git a/core/modules/simpletest/tests/fixtures/simpletest_phpunit_browsertest.php b/core/modules/simpletest/tests/fixtures/simpletest_phpunit_browsertest.php
index 059d818..0e9c416 100644
--- a/core/modules/simpletest/tests/fixtures/simpletest_phpunit_browsertest.php
+++ b/core/modules/simpletest/tests/fixtures/simpletest_phpunit_browsertest.php
@@ -18,6 +18,7 @@ class SimpletestPhpunitBrowserTest extends BrowserTestBase {
    */
   public function testOutput() {
     $this->drupalGet('<front>');
+    $this->assertSession()->responseContains('<h2>TEST escaping</h2>');
   }
 
 }
diff --git a/core/tests/Drupal/Tests/Listeners/HtmlOutputPrinter.php b/core/tests/Drupal/Tests/Listeners/HtmlOutputPrinter.php
index ac22072..aa9fc28 100644
--- a/core/tests/Drupal/Tests/Listeners/HtmlOutputPrinter.php
+++ b/core/tests/Drupal/Tests/Listeners/HtmlOutputPrinter.php
@@ -62,6 +62,9 @@ public function printResult(\PHPUnit_Framework_TestResult $result) {
         $this->writeNewLine();
         $this->writeWithColor('bg-yellow, fg-black', 'HTML output was generated');
         $this->write($contents);
+        // @todo remove this.
+        $this->writeNewLine();
+        $this->write('<br>klausi test <a href="/">test</a>');
       }
       // No need to keep the file around any more.
       unlink($this->browserOutputFile);