diff --git a/module/index/ui/index.html.php b/module/index/ui/index.html.php
index 38f40a77b5..62a22fdfd9 100644
--- a/module/index/ui/index.html.php
+++ b/module/index/ui/index.html.php
@@ -28,7 +28,7 @@ jsVar('manualText',  $lang->manual);
 jsVar('manualUrl',   ((!empty($config->isINT)) ? $config->manualUrl['int'] : $config->manualUrl['home']) . '&theme=' . $_COOKIE['theme']);
 jsVar('langData',     array_merge(array('search' => $lang->index->search, 'searchAB' => $lang->searchAB), (array)$lang->index->dock));
 jsVar('browserMessage', $browserMessage);
-jsVar('pollTime',    (!empty($config->message->browser->turnon) && isset($config->message->browser->pollTime)) ? $config->message->browser->pollTime : 600);
+jsVar('pollTime',    (!empty($config->message->browser->turnon) && !empty($config->message->browser->pollTime)) ? $config->message->browser->pollTime : 600);
 jsVar('turnon',      empty($config->message->browser->turnon) ? 0 : 1);
 jsVar('runnable',    $this->loadModel('cron')->runnable());
 jsVar('showFeatures', $showFeatures);
diff --git a/module/message/config.php b/module/message/config.php
index c637cac386..776e58b6da 100644
--- a/module/message/config.php
+++ b/module/message/config.php
@@ -40,5 +40,6 @@ $config->message->setting['webhook']['setting']  = $config->message->available['
 $config->message->setting['mail']['setting']     = $config->message->available['mail'];
 
 $config->message->browser = new stdclass();
-$config->message->browser->turnon   = 1;
-$config->message->browser->pollTime = 300;
+$config->message->browser->turnon      = 1;
+$config->message->browser->pollTime    = 300;
+$config->message->browser->minPollTime = 30;
diff --git a/module/message/control.php b/module/message/control.php
index cccdc50aa3..87a1019154 100644
--- a/module/message/control.php
+++ b/module/message/control.php
@@ -45,6 +45,8 @@ class message extends control
         if($_POST)
         {
             $data = fixer::input('post')->get();
+            if(empty($data->pollTime)) $this->send(array('result' => 'fail', 'message' => array('pollTime' => sprintf($this->lang->error->notempty, $this->lang->message->browserSetting->pollTime))));
+            if($data->pollTime < $this->config->message->browser->minPollTime) $this->send(array('result' => 'fail', 'message' => array('pollTime' => $this->lang->message->browserSetting->pollTimeTip)));
 
             $browserConfig = new stdclass();
             $browserConfig->turnon   = $data->turnon;
diff --git a/module/message/lang/de.php b/module/message/lang/de.php
index f209176bf7..8b9d003a40 100644
--- a/module/message/lang/de.php
+++ b/module/message/lang/de.php
@@ -13,6 +13,7 @@ $lang->message->browserSetting = new stdclass();
 $lang->message->browserSetting->turnon   = 'Notification';
 $lang->message->browserSetting->pollTime = 'Polling Time';
 
+$lang->message->browserSetting->pollTimeTip         = 'Polling time can not less than 30 seconds.';
 $lang->message->browserSetting->pollTimePlaceholder = 'Notify the time intervals for the search by seconds.';
 
 $lang->message->browserSetting->turnonList[1] = 'On';
diff --git a/module/message/lang/en.php b/module/message/lang/en.php
index 1f2284ea19..a1e74b4c2b 100644
--- a/module/message/lang/en.php
+++ b/module/message/lang/en.php
@@ -13,6 +13,7 @@ $lang->message->browserSetting = new stdclass();
 $lang->message->browserSetting->turnon   = 'Notification';
 $lang->message->browserSetting->pollTime = 'Polling Time';
 
+$lang->message->browserSetting->pollTimeTip         = 'Polling time can not less than 30 seconds.';
 $lang->message->browserSetting->pollTimePlaceholder = 'Notify the time intervals for the search by seconds.';
 
 $lang->message->browserSetting->turnonList[1] = 'On';
diff --git a/module/message/lang/fr.php b/module/message/lang/fr.php
index 41bb7919ec..c8d9472dab 100644
--- a/module/message/lang/fr.php
+++ b/module/message/lang/fr.php
@@ -13,6 +13,7 @@ $lang->message->browserSetting = new stdclass();
 $lang->message->browserSetting->turnon   = 'Notification';
 $lang->message->browserSetting->pollTime = 'Intervalle';
 
+$lang->message->browserSetting->pollTimeTip         = 'Polling time can not less than 30 seconds.';
 $lang->message->browserSetting->pollTimePlaceholder = 'Notifier les intervalles de temps pour la recherche par secondes.';
 
 $lang->message->browserSetting->turnonList[1] = 'On';
diff --git a/module/message/lang/zh-cn.php b/module/message/lang/zh-cn.php
index dccd7cc1d4..04d8829194 100644
--- a/module/message/lang/zh-cn.php
+++ b/module/message/lang/zh-cn.php
@@ -13,6 +13,7 @@ $lang->message->browserSetting = new stdclass();
 $lang->message->browserSetting->turnon   = '是否打开';
 $lang->message->browserSetting->pollTime = '轮询时间';
 
+$lang->message->browserSetting->pollTimeTip         = '轮询时间不能小于30秒。';
 $lang->message->browserSetting->pollTimePlaceholder = '通知的时间间隔，以秒为单位。';
 
 $lang->message->browserSetting->turnonList[1] = '打开';
diff --git a/module/message/ui/browser.html.php b/module/message/ui/browser.html.php
index 9595487640..e350f796c0 100644
--- a/module/message/ui/browser.html.php
+++ b/module/message/ui/browser.html.php
@@ -34,6 +34,7 @@ formPanel
         formGroup
         (
             set::width('1/2'),
+            set::required(true),
             set::label($lang->message->browserSetting->pollTime),
             set::name('pollTime'),
             set::value($browserConfig->pollTime)