diff --git a/_incl_data/class/User.php b/_incl_data/class/User.php
index 0ecf9362..ec8afd12 100644
--- a/_incl_data/class/User.php
+++ b/_incl_data/class/User.php
@@ -602,7 +602,7 @@ class User
             }
         }
 
-        if (!isset ($_COOKIE['btl']) || $this->info['battle'] != $_COOKIE['btl']) {
+        if (!isset ($_COOKIE['btl'], $this->info['battle']) || $this->info['battle'] != $_COOKIE['btl']) {
             setcookie('btl', $this->info['battle'] ?? '', time() + 86400);
         }