diff --git a/core/modules/text/lib/Drupal/text/Plugin/field/widget/TextareaWithSummaryWidget.php b/core/modules/text/lib/Drupal/text/Plugin/field/widget/TextareaWithSummaryWidget.php
index 32f5746..c497d60 100644
--- a/core/modules/text/lib/Drupal/text/Plugin/field/widget/TextareaWithSummaryWidget.php
+++ b/core/modules/text/lib/Drupal/text/Plugin/field/widget/TextareaWithSummaryWidget.php
@@ -36,7 +36,6 @@ function formElement(array $items, $delta, array $element, $langcode, array &$fo
     $element = parent::formElement($items, $delta, $element, $langcode, $form, $form_state);
 
     $display_summary = !empty($items[$delta]['summary']) || $this->instance['settings']['display_summary'];
-    $js = empty($this->instance['settings']['show_summary']) ? array(drupal_get_path('module', 'text') . '/text.js') : array();
     $required = empty($form['#type']) && !empty($this->instance['settings']['required_summary']);
 
     $element['summary'] = array(
@@ -45,9 +44,6 @@ function formElement(array $items, $delta, array $element, $langcode, array &$fo
       '#title' => t('Summary'),
       '#rows' => $this->getSetting('summary_rows'),
       '#description' => empty($this->instance['settings']['required_summary']) ? t('Leave blank to use trimmed value of full text as the summary.') : '',
-      '#attached' => array(
-        'js' => $js,
-      ),
       '#attributes' => array('class' => array('text-summary')),
       '#prefix' => '<div class="text-summary-wrapper">',
       '#suffix' => '</div>',
@@ -55,6 +51,10 @@ function formElement(array $items, $delta, array $element, $langcode, array &$fo
       '#required' => $required,
     );
 
+    if (empty($this->instance['settings']['show_summary'])) {
+      $element['summary']['#attached']['js'] = array(drupal_get_path('module', 'text') . '/text.js');
+    }
+
     return $element;
   }