diff --git a/airtime_mvc/application/forms/StreamSettingSubForm.php b/airtime_mvc/application/forms/StreamSettingSubForm.php
index c50735cf9..5a3e37e65 100644
--- a/airtime_mvc/application/forms/StreamSettingSubForm.php
+++ b/airtime_mvc/application/forms/StreamSettingSubForm.php
@@ -93,6 +93,8 @@ class Application_Form_StreamSettingSubForm extends Zend_Form_SubForm{
         $port = new Zend_Form_Element_Text('port');
         $port->setLabel("Port")
                 ->setValue(isset($setting[$prefix.'_port'])?$setting[$prefix.'_port']:"")
+                ->setValidators(array(new Zend_Validate_Between(array('min'=>0, 'max'=>99999))))
+                ->addValidator('regex', false, array('pattern'=>'/^[0-9]+$/', 'messages'=>array('regexNotMatch'=>'Only numbers are allowed.')))
                 ->setDecorators(array('ViewHelper'));
         if($disable_all){
             $port->setAttrib("disabled", "disabled");
diff --git a/airtime_mvc/public/js/airtime/preferences/streamsetting.js b/airtime_mvc/public/js/airtime/preferences/streamsetting.js
index 481032f56..21bc50a88 100644
--- a/airtime_mvc/public/js/airtime/preferences/streamsetting.js
+++ b/airtime_mvc/public/js/airtime/preferences/streamsetting.js
@@ -2,8 +2,8 @@ function showErrorSections() {
 
     $(".errors").each(function(i){
         if($(this).length > 0){
-            $(this).closest("div").show();
-            $(window).scrollTop($(this).position().top);
+            // -250 is due to static panel on the top
+            $(window).scrollTop($(this).closest("div").position().top-250);
             return false;
         }
     });