diff --git a/interface/lib/classes/tform.inc.php b/interface/lib/classes/tform.inc.php
index d2d0e5db6a395dd2f66daad453d210484f3a077a..813ff80d9b8f4f62cd8ea95769e67dff25824710 100644
--- a/interface/lib/classes/tform.inc.php
+++ b/interface/lib/classes/tform.inc.php
@@ -632,7 +632,7 @@ class tform {
                                         }
                                 break;
 								case 'ISIPV4':
-                                        if(!preg_match("/^[0-9]{1,3}(.)[0-9]{1,3}(.)[0-9]{1,3}(.)[0-9]{1,3}$/", $field_value)) {
+                                        if(!preg_match("/^[0-9]{1,3}(\.)[0-9]{1,3}(\.)[0-9]{1,3}(\.)[0-9]{1,3}$/", $field_value)) {
                                                 $errmsg = $validator['errmsg'];
                                                 if(isset($this->wordbook[$errmsg])) {
                                                     $this->errorMessage .= $this->wordbook[$errmsg]."<br />\r\n";
diff --git a/interface/web/admin/form/server_config.tform.php b/interface/web/admin/form/server_config.tform.php
index a40e47aa83ba202aede265a1e3a704799c689273..eb475894946185c09caf0b4ceb1e25b9b0d9ceb3 100644
--- a/interface/web/admin/form/server_config.tform.php
+++ b/interface/web/admin/form/server_config.tform.php
@@ -68,7 +68,7 @@ $form["tabs"]['server'] = array (
 			'datatype'	=> 'VARCHAR',
 			'formtype'	=> 'TEXT',
 			'default'	=> '192.168.0.105',
-			'validators'	=> array ( 	0 => array (	'type'	=> 'NOTEMPTY',
+			'validators'	=> array ( 	0 => array (	'type'	=> 'ISIPV4',
 														'errmsg'=> 'ip_address_error_empty'),
 									),
 			'value'		=> '',