diff --git a/core/modules/ban/lib/Drupal/ban/Form/BanDelete.php b/core/modules/ban/lib/Drupal/ban/Form/BanDelete.php
index 83d5a90..7cf5efb 100644
--- a/core/modules/ban/lib/Drupal/ban/Form/BanDelete.php
+++ b/core/modules/ban/lib/Drupal/ban/Form/BanDelete.php
@@ -81,11 +81,11 @@ protected function getCancelPath() {
   /**
    * {@inheritdoc}
    *
-   * @param int $ban_ip
+   * @param string $ban_ip_id
    *   The IP address record ID to unban.
    */
-  public function buildForm(array $form, array &$form_state, $ban_ip = '') {
-    $this->banIP = $this->database->query("SELECT * FROM {ban_ip} WHERE iid = :iid", array(':iid' => $ban_ip))->fetchAssoc();
+  public function buildForm(array $form, array &$form_state, $ban_ip_id = '') {
+    $this->banIP = $this->database->query("SELECT * FROM {ban_ip} WHERE iid = :iid", array(':iid' => $ban_ip_id))->fetchAssoc();
     return parent::buildForm($form, $form_state);
   }