diff --git a/core/modules/language/src/Form/LanguageAddForm.php b/core/modules/language/src/Form/LanguageAddForm.php
index d44ce16..f0b1029 100644
--- a/core/modules/language/src/Form/LanguageAddForm.php
+++ b/core/modules/language/src/Form/LanguageAddForm.php
@@ -159,8 +159,8 @@ protected function copyFormValuesToEntity(EntityInterface $entity, array $form,
     $entity->set('id', $langcode);
     $entity->set('label', $label);
     $entity->set('direction', $direction);
-    // There is no weight on in the edit form.
-    // Fetch all configurable languages ordered by weight.
+    // There is no weight on the edit form. Fetch all configurable languages
+    // ordered by weight and set the new language to be placed after them.
     $languages = \Drupal::languageManager()->getLanguages(ConfigurableLanguage::STATE_CONFIGURABLE);
     $last_language = end($languages);
     $entity->setWeight($last_language->getWeight() + 1);