diff --git a/core/lib/Drupal/Core/Datetime/Element/Datelist.php b/core/lib/Drupal/Core/Datetime/Element/Datelist.php
index 59177e77e9..5265bceb6e 100644
--- a/core/lib/Drupal/Core/Datetime/Element/Datelist.php
+++ b/core/lib/Drupal/Core/Datetime/Element/Datelist.php
@@ -311,11 +311,11 @@ public static function validateDatelist(&$element, FormStateInterface $form_stat
       }
       // If there's empty input and the field is required, set an error.
       elseif (empty($input['year']) && empty($input['month']) && empty($input['day']) && $element['#required']) {
-        $form_state->setError($element, t('The %field date is required.'));
+        $form_state->setError($element, t('The %field date is required.', array('%field' => !empty($element['#title']) ? $element['#title'] : '')));
       }
       elseif (!empty($all_empty)) {
         foreach ($all_empty as $value) {
-          $form_state->setError($element[$value], t('A value must be selected for %part.', ['%part' => $value]));
+          $form_state->setError($element[$value], t('A value must be selected for %part.', ['%part' => t($value)]));
         }
       }
       else {