diff --git a/db/update18.3.sql b/db/update18.3.sql
index e38ee5094c..556b852aa2 100644
--- a/db/update18.3.sql
+++ b/db/update18.3.sql
@@ -440,6 +440,9 @@ ALTER TABLE `zt_meetingroom`
 CHANGE `editedBy` `editedBy` varchar(30) NOT NULL DEFAULT '',
 CHANGE `editedDate` `editedDate` datetime NULL;
 
+ALTER TABLE `zt_module`
+CHANGE `short` `short` varchar(30) NOT NULL DEFAULT '';
+
 ALTER TABLE `zt_mr`
 CHANGE `editedBy` `editedBy` varchar(30) NOT NULL DEFAULT '',
 CHANGE `editedDate` `editedDate` datetime NULL;
diff --git a/db/zentao.sql b/db/zentao.sql
index b319782f82..1f4a6f1784 100755
--- a/db/zentao.sql
+++ b/db/zentao.sql
@@ -1097,7 +1097,7 @@ CREATE TABLE IF NOT EXISTS `zt_module` (
   `from` mediumint(8) unsigned NOT NULL default '0',
   `owner` varchar(30) NOT NULL,
   `collector` text NOT NULL,
-  `short` varchar(30) NOT NULL,
+  `short` varchar(30) NOT NULL DEFAULT '',
   `deleted` enum('0','1') NOT NULL default '0',
   PRIMARY KEY (`id`),
   KEY `root` (`root`),
diff --git a/module/cron/control.php b/module/cron/control.php
index 485334be88..bf8be43f5d 100644
--- a/module/cron/control.php
+++ b/module/cron/control.php
@@ -34,7 +34,7 @@ class cron extends control
      */
     public function turnon($confirm = 'no')
     {
-        $turnon = empty($this->config->global->cron) ? 1 : 0;
+        $turnon = empty($this->config->global->cron) ? '1' : '0';
         if(!$turnon and $confirm == 'no') return print(js::confirm($this->lang->cron->confirmTurnon, inlink('turnon', "confirm=yes")));
         $this->loadModel('setting')->setItem('system.common.global.cron', $turnon);
         return print(js::reload('parent'));
diff --git a/module/install/control.php b/module/install/control.php
index 3e39e044ad..211a03661a 100644
--- a/module/install/control.php
+++ b/module/install/control.php
@@ -264,7 +264,7 @@ class install extends control
             $this->setting->setItem('system.common.global.flow', $this->post->flow);
             $this->setting->setItem('system.common.safe.mode', '1');
             $this->setting->setItem('system.common.safe.changeWeak', '1');
-            $this->setting->setItem('system.common.global.cron', 1);
+            $this->setting->setItem('system.common.global.cron', '1');
 
             $httpType = (isset($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] == 'on') ? 'https' : 'http';
             if(isset($_SERVER['HTTP_X_FORWARDED_PROTO']) and strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']) == 'https') $httpType = 'https';