diff --git a/lib/Froxlor/Api/Commands/SubDomains.php b/lib/Froxlor/Api/Commands/SubDomains.php
index b07cada7..968e286b 100644
--- a/lib/Froxlor/Api/Commands/SubDomains.php
+++ b/lib/Froxlor/Api/Commands/SubDomains.php
@@ -875,7 +875,9 @@ class SubDomains extends \Froxlor\Api\ApiCommand implements \Froxlor\Api\Resourc
 	 *        	optional, the domain-id
 	 * @param string $domainname
 	 *        	optional, the domainname
-	 *        	
+	 * @param int $customerid
+	 *        	required when called as admin, not needed when called as customer
+	 *
 	 * @access admin, customer
 	 * @throws \Exception
 	 * @return string json-encoded array