diff --git a/classes/webhook.php b/classes/webhook.php
index a22cb90..45862f9 100644
--- a/classes/webhook.php
+++ b/classes/webhook.php
@@ -13,7 +13,7 @@ class webhook extends core
         parent::__construct();
         if($json)
         {
-            $this->filter = $filter ?? NULL;
+            $this->filter = $filter;
             $this->json = json_decode($json, false);
         }
         else