diff --git a/src/Gitonomy/Git/Repository.php b/src/Gitonomy/Git/Repository.php
index 9b3e558..5493023 100644
--- a/src/Gitonomy/Git/Repository.php
+++ b/src/Gitonomy/Git/Repository.php
@@ -118,7 +118,7 @@ public function __construct($dir, $options = array())
             'working_dir' => null,
             'debug' => true,
             'logger' => null,
-            'environment_variables' => $is_windows ? array('PATH' => $_SERVER['PATH']) : array(),
+            'environment_variables' => $is_windows ? array('PATH' => getenv('path')) : array(),
             'command' => 'git',
             'process_timeout' => 3600,
         ), $options);