0a1,16
> diff --git a/core/modules/block/lib/Drupal/block/BlockBase.php b/core/modules/block/lib/Drupal/block/BlockBase.php
> index 579e841..c2d57b8 100644
> --- a/core/modules/block/lib/Drupal/block/BlockBase.php
> +++ b/core/modules/block/lib/Drupal/block/BlockBase.php
> @@ -89,6 +89,11 @@ public function buildConfigurationForm(array $form, array &$form_state) {
>        '#value' => $definition['module'],
>      );
>  
> +    $form['admin_label'] = array(
> +      '#type' => 'item',
> +      '#title' => t('Block description'),
> +      '#markup' => check_plain($definition['admin_label']),
> +    );
>      $form['label'] = array(
>        '#type' => 'textfield',
>        '#title' => $this->t('Title'),