diff --git a/includes/app.php b/includes/app.php
index 20fa812..d5a284a 100644
--- a/includes/app.php
+++ b/includes/app.php
@@ -90,7 +90,7 @@ class app
     private function checkIfFilterNeeded()
     {
 
-        if(in_array("HTTP_X_GITEA_DELIVERY",$_SERVER))
+        if(array_key_exists("HTTP_X_GITEA_DELIVERY",$_SERVER))
         {
             return 'gitea';
         }