diff --git a/core/modules/comment/lib/Drupal/comment/CommentManager.php b/core/modules/comment/lib/Drupal/comment/CommentManager.php
index 2102abec3d650c83adbb7ef77490b39c802599b8..126d6b44d30dc6dbaf6262f6a3956b8fc4a36a04 100644
--- a/core/modules/comment/lib/Drupal/comment/CommentManager.php
+++ b/core/modules/comment/lib/Drupal/comment/CommentManager.php
@@ -147,6 +147,9 @@ public function addDefaultField($entity_type, $bundle, $field_name = 'comment',
         'name' => $field_name,
         'type' => 'comment',
         'translatable' => '0',
+        'settings' => array(
+          'description' => 'Default comment field',
+        ),
       ));
       // Create the field.
       $field->save();
diff --git a/core/modules/comment/lib/Drupal/comment/Controller/AdminController.php b/core/modules/comment/lib/Drupal/comment/Controller/AdminController.php
index fc04bd8e57702bb36800f3fbb6c41fc6d2685ec6..f46a606632cd08cff8bc317d473b15db4d4a28ee 100644
--- a/core/modules/comment/lib/Drupal/comment/Controller/AdminController.php
+++ b/core/modules/comment/lib/Drupal/comment/Controller/AdminController.php
@@ -80,6 +80,10 @@ public function __construct(FieldInfo $field_info, CommentManagerInterface $comm
   public function overviewBundles() {
     $header = array(
       'field_name' => $this->t('Field name'),
+      'description' => array(
+        'data' => $this->t('Description'),
+        'class' => array(RESPONSIVE_PRIORITY_MEDIUM),
+      ),
       'usage' => array(
         'data' => $this->t('Used in'),
         'class' => array(RESPONSIVE_PRIORITY_MEDIUM),
@@ -118,6 +122,7 @@ public function overviewBundles() {
         );
         $row['data']['field_name']['data'] = $field_info->get('locked') ? $this->t('@label (@field_name) (Locked)', $tokens) : $this->t('@label (@field_name)', $tokens);
 
+        $row['data']['description']['data'] = $field_info->getSetting('description');
         $row['data']['usage']['data'] = array(
           '#theme' => 'item_list',
           '#items' => array(),
diff --git a/core/modules/comment/lib/Drupal/comment/Plugin/Field/FieldType/CommentItem.php b/core/modules/comment/lib/Drupal/comment/Plugin/Field/FieldType/CommentItem.php
index b50bafc72f59021e1ab00802497ce9a817501f6a..be4f79f0647c8d8d2cd82f3f61c21d60b406eed6 100644
--- a/core/modules/comment/lib/Drupal/comment/Plugin/Field/FieldType/CommentItem.php
+++ b/core/modules/comment/lib/Drupal/comment/Plugin/Field/FieldType/CommentItem.php
@@ -18,6 +18,9 @@
  *   id = "comment",
  *   label = @Translation("Comments"),
  *   description = @Translation("This field manages configuration and presentation of comments on an entity."),
+ *   settings = {
+ *     "description" = "",
+ *   },
  *   instance_settings = {
  *     "default_mode" = COMMENT_MODE_THREADED,
  *     "per_page" = 50,
@@ -195,4 +198,19 @@ public static function processSettingsElement($element) {
     return $element;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function settingsForm(array $form, array &$form_state, $has_data) {
+    $element = array();
+
+    $element['description'] = array(
+      '#type' => 'textarea',
+      '#title' => t('Field description'),
+      '#description' => t('Describe this comment field. The text will be displayed on the <em>Comments Forms</em> page.'),
+      '#default_value' => $this->getSetting('description'),
+    );
+    return $element;
+  }
+
 }
diff --git a/core/modules/comment/lib/Drupal/comment/Tests/CommentAdminTest.php b/core/modules/comment/lib/Drupal/comment/Tests/CommentAdminTest.php
index e631da2d599ded4a7a96c344e841ef84a6c593b5..4f2f2112f1f13e1bde17b79a5d4947b175b8fae3 100644
--- a/core/modules/comment/lib/Drupal/comment/Tests/CommentAdminTest.php
+++ b/core/modules/comment/lib/Drupal/comment/Tests/CommentAdminTest.php
@@ -162,6 +162,9 @@ public function testCommentAdmin() {
     // Make sure titles visible.
     $this->assertText('Field name');
     $this->assertText('Used in');
+    $this->assertText('Description');
+    // Make sure the description is present.
+    $this->assertText('Default comment field');
     // Manage fields.
     $this->clickLink('Manage fields');
     $this->assertResponse(200);