diff --git a/src/Appwrite/Platform/Modules/Sites/Http/Sites/CreateSite.php b/src/Appwrite/Platform/Modules/Sites/Http/Sites/CreateSite.php
index f6983e8f48..6b314a2037 100644
--- a/src/Appwrite/Platform/Modules/Sites/Http/Sites/CreateSite.php
+++ b/src/Appwrite/Platform/Modules/Sites/Http/Sites/CreateSite.php
@@ -104,7 +104,7 @@ class CreateSite extends Base
 
         if (!empty($sitesDomain)) {
             $ruleId = ID::unique();
-            $routeSubdomain = $subdomain ?? ID::unique();
+            $routeSubdomain = $subdomain || ID::unique();
             $domain = "{$routeSubdomain}.{$sitesDomain}";
 
             $subdomain = Authorization::skip(fn () => $dbForConsole->findOne('rules', [