diff --git a/core/lib/Drupal/Core/Render/RenderContext.php b/core/lib/Drupal/Core/Render/RenderContext.php
index e49c291..ddcd264 100644
--- a/core/lib/Drupal/Core/Render/RenderContext.php
+++ b/core/lib/Drupal/Core/Render/RenderContext.php
@@ -14,8 +14,6 @@
  * @see \Drupal\Core\Render\RendererInterface
  * @see \Drupal\Core\Render\Renderer
  * @see \Drupal\Core\Render\BubbleableMetadata
- *
- * @internal
  */
 class RenderContext extends \SplStack {
 
diff --git a/core/tests/Drupal/Tests/Core/Mail/MailManagerTest.php b/core/tests/Drupal/Tests/Core/Mail/MailManagerTest.php
index f7ee941..d6d6950 100644
--- a/core/tests/Drupal/Tests/Core/Mail/MailManagerTest.php
+++ b/core/tests/Drupal/Tests/Core/Mail/MailManagerTest.php
@@ -96,8 +96,9 @@ protected function setUpMailManager($interface = array()) {
     ));
     $logger_factory = $this->getMock('\Drupal\Core\Logger\LoggerChannelFactoryInterface');
     $string_translation = $this->getStringTranslationStub();
+    $renderer = $this->getMock('\Drupal\Core\Render\RendererInterface');
     // Construct the manager object and override its discovery.
-    $this->mailManager = new TestMailManager(new \ArrayObject(), $this->cache, $this->moduleHandler, $this->configFactory, $logger_factory, $string_translation);
+    $this->mailManager = new TestMailManager(new \ArrayObject(), $this->cache, $this->moduleHandler, $this->configFactory, $logger_factory, $string_translation, $renderer);
     $this->mailManager->setDiscovery($this->discovery);
   }