diff --git a/test/phpunitBootstrap.php b/test/phpunitBootstrap.php
index <HASH>..<HASH> 100644
--- a/test/phpunitBootstrap.php
+++ b/test/phpunitBootstrap.php
@@ -1,11 +1,9 @@
 <?php
-

-define('ARTAX_SYSDIR', dirname(__DIR__));
 
 spl_autoload_register(function($cls) {
     if (0 === strpos($cls, 'Artax\\')) {
         $cls = str_replace('\\', '/', $cls);        
-        require ARTAX_SYSDIR . "/src/$cls.php";
+        require dirname(__DIR__) . "/src/$cls.php";
     }
-});

+});
removed constant from testing bootstrap for better multi-process testing