diff --git a/core/modules/user/src/Entity/User.php b/core/modules/user/src/Entity/User.php
index 030b9a9..b0845cb 100644
--- a/core/modules/user/src/Entity/User.php
+++ b/core/modules/user/src/Entity/User.php
@@ -7,6 +7,7 @@
 use Drupal\Core\Entity\EntityStorageInterface;
 use Drupal\Core\Entity\EntityTypeInterface;
 use Drupal\Core\Field\BaseFieldDefinition;
+use Drupal\Core\Language\Language;
 use Drupal\Core\Language\LanguageInterface;
 use Drupal\user\RoleInterface;
 use Drupal\user\UserInterface;
@@ -416,6 +417,7 @@ public static function getAnonymousUser() {
       static::$anonymousUser = new $class([
         'uid' => [LanguageInterface::LANGCODE_DEFAULT => 0],
         'name' => [LanguageInterface::LANGCODE_DEFAULT => ''],
+        'langcode' => [LanguageInterface::LANGCODE_DEFAULT => LanguageInterface::LANGCODE_NOT_SPECIFIED]
       ], $entity_type->id());
     }
     return clone static::$anonymousUser;