diff --git a/db/update4.2.sql b/db/update4.2.sql
index 8ab3e051f6..77b04c362d 100644
--- a/db/update4.2.sql
+++ b/db/update4.2.sql
@@ -1,2 +1,3 @@
 ALTER TABLE `zt_extension` ADD `depends` VARCHAR( 100 ) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL AFTER `installedTime` ;
 ALTER TABLE `zt_extension` CHANGE `zentaoVersion` `zentaoCompatible` VARCHAR( 100 ) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL;
+ALTER TABLE `zt_company` DROP `pms`;
diff --git a/module/install/control.php b/module/install/control.php
index e30816d330..c9da94b521 100644
--- a/module/install/control.php
+++ b/module/install/control.php
@@ -96,7 +96,6 @@ class install extends control
                 $this->view->app       = $this->app;
                 $this->view->lang      = $this->lang;
                 $this->view->config    = $this->config;
-                $this->view->domain    = $this->server->HTTP_HOST;
                 $this->view->title     = $this->lang->install->saveConfig;
                 $this->view->mysqldump = $this->install->getMySQLDump();
                 $this->display();
@@ -142,7 +141,6 @@ class install extends control
         }
         else
         {
-            $this->view->pmsDomain = $this->server->HTTP_HOST;
             $this->display();
         }
     }
diff --git a/module/install/model.php b/module/install/model.php
index 504f2af921..8ccc20e70c 100644
--- a/module/install/model.php
+++ b/module/install/model.php
@@ -390,9 +390,8 @@ class installModel extends model
         /* Insert a company. */
         $company = new stdclass();
         $company->name   = $this->post->company;
-        $company->pms    = $this->post->pms;
         $company->admins = ",{$this->post->account},";
-        $this->dao->insert(TABLE_COMPANY)->data($company)->autoCheck()->batchCheck('name, pms', 'notempty')->check('pms', 'unique')->exec();
+        $this->dao->insert(TABLE_COMPANY)->data($company)->autoCheck()->batchCheck('name', 'notempty')->exec();
 
         if(!dao::isError())
         {
diff --git a/module/install/view/step3.html.php b/module/install/view/step3.html.php
index ece90a7992..e915e9a0fc 100644
--- a/module/install/view/step3.html.php
+++ b/module/install/view/step3.html.php
@@ -25,7 +25,6 @@ if(!isset($error))
 \$config->db->password    = '$dbPassword';
 \$config->db->prefix      = '$dbPrefix';
 \$config->webRoot         = getWebRoot();
-\$config->default->domain = '$domain';
 \$config->default->lang   = '$defaultLang';
 \$config->mysqldump       = '$mysqldump';
 EOT;
diff --git a/module/install/view/step4.html.php b/module/install/view/step4.html.php
index d039484ee8..24940e2323 100644
--- a/module/install/view/step4.html.php
+++ b/module/install/view/step4.html.php
@@ -31,10 +31,6 @@
     <th class='rowhead'><?php echo $lang->install->company;?></th>
     <td><?php echo html::input('company');?></td>
   </tr>
-  <tr>
-    <th class='rowhead'><?php echo $lang->install->pms;?></th>
-    <td><?php echo html::input('pms', $pmsDomain) . "<span class='f-12px'>{$lang->install->pmsNote}</span>";?></td>
-  </tr>
   <tr>
     <th class='rowhead'><?php echo $lang->install->account;?></th>
     <td><?php echo html::input('account');?></td>