diff --git a/core/modules/field/field.api.php b/core/modules/field/field.api.php
index 52756d8045..aed3dde820 100644
--- a/core/modules/field/field.api.php
+++ b/core/modules/field/field.api.php
@@ -290,7 +290,7 @@ function hook_field_widget_multiple_WIDGET_TYPE_form_alter(&$elements, \Drupal\C
     ];
   }
   else {
-    $elements['#description'] = \Drupal::t('These items might be out of date.'),
+    $elements['#description'] = \Drupal::t('These items might be out of date.');
   }
 }