diff --git a/core/modules/language/src/Form/ContentLanguageSettingsForm.php b/core/modules/language/src/Form/ContentLanguageSettingsForm.php
index 1d4b3b3..6dfb305 100644
--- a/core/modules/language/src/Form/ContentLanguageSettingsForm.php
+++ b/core/modules/language/src/Form/ContentLanguageSettingsForm.php
@@ -124,11 +124,11 @@ public function buildForm(array $form, FormStateInterface $form_state) {
         '#header' => [
           [
             'data' => $entity_type->getBundleLabel() ?: $label,
-            'class' => array('bundle'),
+            'class' => ['bundle'],
           ],
           [
             'data' => t('Configuration'),
-            'class' => array('operations'),
+            'class' => ['operations'],
           ],
         ]
       ];