diff -u b/redirect.module b/redirect.module
--- b/redirect.module
+++ b/redirect.module
@@ -505,7 +505,7 @@
       'url' => Url::fromRoute('redirect.add', [
         'redirect' => "/node/$nid",
         'destination' => $current_page->toString(),
-       ]),
+      ]),
       'attributes' => [
         'class' => 'button',
         'target' => '_blank',