diff --git a/core/modules/menu_link_content/src/Entity/MenuLinkContent.php b/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
index 685706f..bf418dd 100644
--- a/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
+++ b/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
@@ -236,6 +236,10 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
     /** @var \Drupal\Core\Field\BaseFieldDefinition[] $fields */
     $fields = parent::baseFieldDefinitions($entity_type);
 
+    $fields['bundle']
+      ->setSetting('max_length', EntityTypeInterface::BUNDLE_MAX_LENGTH)
+      ->setSetting('is_ascii', TRUE);
+
     $fields['title'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Menu link title'))
       ->setDescription(t('The text to be used for this link in the menu.'))