diff --git a/core/modules/views/src/Tests/Plugin/StyleTestBase.php b/core/modules/views/src/Tests/Plugin/StyleTestBase.php
index 8bc328c2242efc293e0de3813fb95ea85362b0a2..b5f729c5395b54199903c07226d382ff8de557bc 100644
--- a/core/modules/views/src/Tests/Plugin/StyleTestBase.php
+++ b/core/modules/views/src/Tests/Plugin/StyleTestBase.php
@@ -8,6 +8,7 @@
namespace Drupal\views\Tests\Plugin;
use Drupal\views\Tests\ViewUnitTestBase;
+use Masterminds\HTML5;
/**
* Tests some general style plugin related functionality.
@@ -25,8 +26,8 @@ abstract class StyleTestBase extends ViewUnitTestBase {
* Stores a view output in the elements.
*/
function storeViewPreview($output) {
- $htmlDom = new \DOMDocument();
- @$htmlDom->loadHTML($output);
+ $html5 = new HTML5();
+ $htmlDom = $html5->loadHTML('<html><body>' . $output . '</body></html>');
if ($htmlDom) {
// It's much easier to work with simplexml than DOM, luckily enough
// we can just simply import our DOM tree.