core/tests/Drupal/Tests/Core/Render/RendererTest.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/tests/Drupal/Tests/Core/Render/RendererTest.php b/core/tests/Drupal/Tests/Core/Render/RendererTest.php
index 95af802..c8db79e 100644
--- a/core/tests/Drupal/Tests/Core/Render/RendererTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/RendererTest.php
@@ -1226,7 +1226,7 @@ public function testRenderChildrenPostRenderCacheDifferentContexts() {
     // Use the exact same element, but now unset #cache.
     unset($test_element['#cache']);
     $element = $test_element;
-    $output = $this->renderer->render($element);
+    $output = $this->renderer->renderRoot($element);
     $this->assertSame($output, '<p>overridden</p>', 'Output is overridden.');
     $this->assertSame($element['#markup'], '<p>overridden</p>', '#markup is overridden.');
     $this->assertSame($element['#attached']['drupalSettings'], $expected_js_settings, '#attached is modified; both the original JavaScript setting and the ones added by each #post_render_cache callback exist.');