diff --git a/tests/model/MySQLiStatementTest.php b/tests/model/MySQLiStatementTest.php
index 2a66c89..ad1f8da 100644
--- a/tests/model/MySQLiStatementTest.php
+++ b/tests/model/MySQLiStatementTest.php
@@ -23,9 +23,14 @@ require_once dirname(__FILE__) . '/../../exception/GeneralException.php';
 class MySQLiStatementTest extends PHPUnit_Framework_TestCase
 {
 
-
+    /**
+     * @var MySQLiDriver|PHPUnit_Framework_MockObject_MockObject
+     */
     private $driver;
 
+    /**
+     * @var MySQLiStatement
+     */
     private $stmt;
 
     private $sql;