core/lib/Drupal/Core/ParamConverter/EntityConverter.php | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/core/lib/Drupal/Core/ParamConverter/EntityConverter.php b/core/lib/Drupal/Core/ParamConverter/EntityConverter.php
index c17ae1e..6d8b2d2 100644
--- a/core/lib/Drupal/Core/ParamConverter/EntityConverter.php
+++ b/core/lib/Drupal/Core/ParamConverter/EntityConverter.php
@@ -68,12 +68,9 @@ class EntityConverter implements ParamConverterInterface {
    *
    * @see https://www.drupal.org/node/xxx
    */
-  public function __construct(EntityManagerInterface $entity_manager, LanguageManagerInterface $language_manager = NULL) {
+  public function __construct(EntityManagerInterface $entity_manager, LanguageManagerInterface $language_manager) {
     $this->entityManager = $entity_manager;
     $this->languageManager = $language_manager ?: \Drupal::languageManager();
-    if (!isset($language_manager)) {
-      @trigger_error('The language manager parameter has been added to EntityConverter since version 8.5.0 and will be made required in version 9.0.0.', E_USER_DEPRECATED);
-    }
   }
 
   /**