diff --git a/view/helpers/MsgViewHelper.php b/view/helpers/MsgViewHelper.php
index 0a2b89f..1283367 100644
--- a/view/helpers/MsgViewHelper.php
+++ b/view/helpers/MsgViewHelper.php
@@ -18,6 +18,13 @@ class MsgViewHelper extends ViewHelper
 
     const WARNING = 'warning';
 
+    private static $type_to_class = array(
+        self::SUCCESS => 'success',
+        self::ERROR => 'error',
+        self::INFO => 'info',
+        self::WARNING => 'warning',
+    );
+
     protected $css_prefix = '';
 
     public function msg($msg = null, $type = null)
@@ -67,8 +74,14 @@ class MsgViewHelper extends ViewHelper
         $msg = Session::get(__CLASS__, false);
         if ($msg) {
             Session::del(__CLASS__);
-            return '<div class="' . $this->css_prefix . $msg['type'] . '">' . $this->view->escape($msg['message']) . '</div>';
+            $type_to_class = static::getTypeToClass();
+            return '<div class="' . $this->css_prefix . $type_to_class[$msg['type']] . '">' . $this->view->escape($msg['message']) . '</div>';
         }
         return '';
     }
+
+    protected static function getTypeToClass()
+    {
+        return self::$type_to_class;
+    }
 }
\ No newline at end of file