diff --git a/module/install/control.php b/module/install/control.php
index cfda7b6c35..a5212c0354 100644
--- a/module/install/control.php
+++ b/module/install/control.php
@@ -23,7 +23,7 @@ class install extends control
         parent::__construct();
         $this->app->loadLang('user');
         $this->app->loadLang('admin');
-        $this->config->webRoot = $this->install->getWebRoot();
+        $this->config->webRoot = getWebRoot();
     }
 
     /**
diff --git a/module/install/model.php b/module/install/model.php
index d3864c1b81..c712c4839d 100644
--- a/module/install/model.php
+++ b/module/install/model.php
@@ -202,17 +202,6 @@ class installModel extends model
         return $iniInfo;
     }
 
-    /**
-     * Get web root.
-     * 
-     * @access public
-     * @return string
-     */
-    public function getWebRoot()
-    {
-        return rtrim(str_replace('\\', '/', pathinfo($_SERVER['PHP_SELF'], PATHINFO_DIRNAME)), '/') . '/';
-    }
-
     /**
      * Check config ok or not.
      * 
diff --git a/module/install/view/step2.html.php b/module/install/view/step2.html.php
index d782b23903..31c7a623b0 100644
--- a/module/install/view/step2.html.php
+++ b/module/install/view/step2.html.php
@@ -18,10 +18,6 @@
       <th class='w-p20'><?php echo $lang->install->key;?></th>
       <th class='a-left'><?php echo $lang->install->value?></th>
     </tr>
-    <tr>
-      <th><?php echo $lang->install->webRoot;?></th>
-      <td><?php echo html::input('webRoot', $webRoot, 'class=text-3');?></td>
-    </tr>
     <tr>
       <th><?php echo $lang->install->requestType;?></th>
       <td><?php echo html::select('requestType', $lang->install->requestTypes, 'GET', 'class=select-3');?></td>
diff --git a/module/install/view/step3.html.php b/module/install/view/step3.html.php
index 5b47d188e3..a1b72fefaa 100644
--- a/module/install/view/step3.html.php
+++ b/module/install/view/step3.html.php
@@ -24,7 +24,7 @@ if(!isset($error))
 \$config->db->user        = '$dbUser';
 \$config->db->password    = '$dbPassword';
 \$config->db->prefix      = '$dbPrefix';
-\$config->webRoot         = '$webRoot';
+\$config->webRoot         = getWebRoot();
 \$config->default->domain = '$domain';
 \$config->default->lang   = '$defaultLang';
 \$config->mysqldump       = '';