diff --git a/lib/Newsletter/Shortcodes/Shortcodes.php b/lib/Newsletter/Shortcodes/Shortcodes.php
index c6f95f6f91..7c0466fb7c 100644
--- a/lib/Newsletter/Shortcodes/Shortcodes.php
+++ b/lib/Newsletter/Shortcodes/Shortcodes.php
@@ -13,8 +13,6 @@ use MailPoet\Newsletter\Shortcodes\Categories\Subscriber;
 use MailPoet\WP\Functions as WPFunctions;
 
 class Shortcodes {
-  const SHORTCODE_CATEGORY_NAMESPACE = 'MailPoet\Newsletter\Shortcodes\Categories\\';
-
   /** @var NewsletterEntity|null */
   private $newsletter;