diff --git a/interface/web/client/form/domain.tform.php b/interface/web/client/form/domain.tform.php
index a12878380f57947f917a796f465b5cff219c5e08..549617e713cc3f0bc23e1d312513e3c8f1a7d46a 100644
--- a/interface/web/client/form/domain.tform.php
+++ b/interface/web/client/form/domain.tform.php
@@ -100,7 +100,7 @@ $form["tabs"]['domain'] = array (
 				1 => array ( 'type' => 'UNIQUE',
 					'errmsg'=> 'domain_error_unique'),
 				2 => array ( 'type' => 'REGEX',
-					'regex' => '/^[\w\.\-]{2,255}\.[a-zA-Z\-]{2,10}$/',
+					'regex' => '/^[\w\.\-]{2,255}\.[a-zA-Z0-9\-]{2,30}$/',
 					'errmsg'=> 'domain_error_regex'),
 			),
 			'default' => '',