diff --git a/core/modules/comment/src/Plugin/Field/FieldFormatter/CommentDefaultFormatter.php b/core/modules/comment/src/Plugin/Field/FieldFormatter/CommentDefaultFormatter.php
index 64ff301..d6d1af0 100644
--- a/core/modules/comment/src/Plugin/Field/FieldFormatter/CommentDefaultFormatter.php
+++ b/core/modules/comment/src/Plugin/Field/FieldFormatter/CommentDefaultFormatter.php
@@ -40,6 +40,7 @@ class CommentDefaultFormatter extends FormatterBase implements ContainerFactoryP
    */
   public static function defaultSettings() {
     return array(
+      'view_mode' => 'full',
       'pager_id' => 0,
     ) + parent::defaultSettings();
   }
@@ -162,7 +163,7 @@ public function viewElements(FieldItemListInterface $items, $langcode) {
           $comments_per_page = $comment_settings['per_page'];
           $comments = $this->storage->loadThread($entity, $field_name, $mode, $comments_per_page, $this->getSetting('pager_id'));
           if ($comments) {
-            $build = $this->viewBuilder->viewMultiple($comments);
+            $build = $this->viewBuilder->viewMultiple($comments, $this->getSetting('view_mode'));
             $build['pager']['#type'] = 'pager';
             if ($this->getSetting('pager_id')) {
               $build['pager']['#element'] = $this->getSetting('pager_id');
@@ -206,6 +207,16 @@ public function viewElements(FieldItemListInterface $items, $langcode) {
    */
   public function settingsForm(array $form, FormStateInterface $form_state) {
     $element = array();
+    $options = array_map(function (array $view_mode) {
+      return $view_mode['label'];
+    }, $this->entityManager->getViewModes('comment'));
+    $element['view_mode'] = array(
+      '#type' => 'select',
+      '#title' => $this->t('Comments view mode'),
+      '#description' => $this->t('Select the view mode used to show the list of comments.'),
+      '#options' => $options,
+      '#default_value' => $this->getSetting('view_mode'),
+    );
     $element['pager_id'] = array(
       '#type' => 'select',
       '#title' => $this->t('Pager ID'),