diff --git a/src/Form/EventSeriesDeleteForm.php b/src/Form/EventSeriesDeleteForm.php
index 7ffe9a2fc5d1d840fbf25df33800dd3ec3d4d843..7412987770b61bedd22100b20512212b31bf5152 100644
--- a/src/Form/EventSeriesDeleteForm.php
+++ b/src/Form/EventSeriesDeleteForm.php
@@ -44,6 +44,7 @@ class EventSeriesDeleteForm extends ContentEntityDeleteForm {
    *
    * @var \Drupal\Core\Render\Renderer
    */
+  protected $renderer;
 
   /**
    * {@inheritdoc}