diff --git a/classes/Config.php b/classes/Config.php
index 1feef95..7d33665 100644
--- a/classes/Config.php
+++ b/classes/Config.php
@@ -93,8 +93,9 @@ class Config
      *
      * @return Config
      */
-    public static function getInstance($yamlfile = __DIR__.'/../config.yml')
+    public static function getInstance($yamlfile = 'config.yml')
     {
+        $yamlfile = __DIR__.'/../'.$yamlfile;
         if (is_null(self::$instance) || self::$instance->file != $yamlfile) {
             self::$instance = new Config($yamlfile);
         }
diff --git a/tests/ConfigTest.php b/tests/ConfigTest.php
index c58b171..8ea8e84 100644
--- a/tests/ConfigTest.php
+++ b/tests/ConfigTest.php
@@ -16,7 +16,7 @@ class ConfigTest extends \PHPUnit_Framework_TestCase
 
     protected function setUp()
     {
-        $this->config = Config::getInstance(__DIR__.'/../config_test.yml');
+        $this->config = Config::getInstance('config_test.yml');
     }
 
     /**
@@ -39,7 +39,7 @@ class ConfigTest extends \PHPUnit_Framework_TestCase
     {
         putenv('CONVERT=1');
         Config::destroyInstance();
-        $config = Config::getInstance(__DIR__.'/../config_test.yml');
+        $config = Config::getInstance('config_test.yml');
         $this->assertEquals($config->convert, true);
     }
 }