diff --git a/core/modules/language/lib/Drupal/language/LanguageAccessController.php b/core/modules/language/lib/Drupal/language/LanguageAccessController.php
index 82f994e..6636def 100644
--- a/core/modules/language/lib/Drupal/language/LanguageAccessController.php
+++ b/core/modules/language/lib/Drupal/language/LanguageAccessController.php
@@ -19,7 +19,7 @@ class LanguageAccessController extends EntityAccessController {
    */
   public function access(EntityInterface $entity, $operation, $langcode = Language::LANGCODE_DEFAULT, AccountInterface $account = NULL) {
     switch ($operation) {
-      case 'edit':
+      case 'update':
       case 'delete':
         return !$entity->locked && user_access('administer languages');
         break;
diff --git a/core/modules/language/lib/Drupal/language/LanguageListController.php b/core/modules/language/lib/Drupal/language/LanguageListController.php
index 9dbe40a..d729b78 100644
--- a/core/modules/language/lib/Drupal/language/LanguageListController.php
+++ b/core/modules/language/lib/Drupal/language/LanguageListController.php
@@ -38,8 +38,8 @@ public function getOperations(EntityInterface $entity) {
     $operations = parent::getOperations($entity);
     $default = language_default();
 
-    // Edit and delete path for Languages entities have a different scheme
-    // then other config entities.
+    // Edit and delete path for Languages entities have a different pattern
+    // than other config entities.
     $path = 'admin/config/regional/language';
     if (isset($operations['edit'])) {
       $operations['edit']['href'] = $path . '/edit/' . $entity->id();
@@ -48,6 +48,7 @@ public function getOperations(EntityInterface $entity) {
       $operations['delete']['href'] = $path . '/delete/' . $entity->id();
     }
 
+    // Deleting the site default language is not allowed.
     if ($entity->id() == $default->id) {
       unset($operations['delete']);
     }