diff --git a/core/modules/datetime/datetime.module b/core/modules/datetime/datetime.module
index 3a016b5..f12ee12 100644
--- a/core/modules/datetime/datetime.module
+++ b/core/modules/datetime/datetime.module
@@ -227,13 +227,11 @@ function template_preprocess_datetime_wrapper(&$variables) {
   $element = $variables['element'];
 
   // If the element is required, a required marker is appended to the label.
-  $variables['required'] = NULL;
-  if(!empty($element['#required'])) {
-    $variables['required'] = array(
-      '#theme' => 'form_required_marker',
-      '#element' => $element,
-    );
-  }
+  $form_required_marker = array(
+    '#theme' => 'form_required_marker',
+    '#element' => $element
+  );
+  $variables['required'] = !empty($element['#required']) ? drupal_render($form_required_marker) : '';
 
   if (!empty($element['#title'])) {
     $variables['title'] = $element['#title'];
diff --git a/core/modules/datetime/lib/Drupal/datetime/Tests/DateTimeFieldTest.php b/core/modules/datetime/lib/Drupal/datetime/Tests/DateTimeFieldTest.php
index 76b4cb9..ec62ca3 100644
--- a/core/modules/datetime/lib/Drupal/datetime/Tests/DateTimeFieldTest.php
+++ b/core/modules/datetime/lib/Drupal/datetime/Tests/DateTimeFieldTest.php
@@ -69,6 +69,7 @@ function setUp() {
       'field_name' => $this->field->name,
       'entity_type' => 'entity_test',
       'bundle' => 'entity_test',
+      'required' => TRUE,
     ));
     $this->instance->save();
 
@@ -97,6 +98,7 @@ function testDateField() {
     // Display creation form.
     $this->drupalGet('entity_test/add');
     $this->assertFieldByName("{$field_name}[0][value][date]", '', 'Date element found.');
+    $this->assertFieldByXPath('//*[@id="' . $field_name . '-add-more-wrapper"]/h4/span', '*', 'Required markup found');
     $this->assertNoFieldByName("{$field_name}[0][value][time]", '', 'Time element not found.');
 
     // Submit a valid date and ensure it is accepted.