diff --git a/tests/UnitTests/A_Core/Filter/FilterTest.php b/tests/UnitTests/A_Core/Filter/FilterTest.php
index 589d37ea..a2f41e41 100644
--- a/tests/UnitTests/A_Core/Filter/FilterTest.php
+++ b/tests/UnitTests/A_Core/Filter/FilterTest.php
@@ -187,6 +187,7 @@ class FilterTest extends PHPUnit_Smarty
 
     /**
      * test registered pre filter closure
+     * @requires PHP 5.3.3
      */
     public function testRegisteredPreFilterClosure()
     {