diff --git a/src/Twig.php b/src/Environment.php
similarity index 67%
rename from src/Twig.php
rename to src/Environment.php
index c24bb1828..a165f8b5c 100644
--- a/src/Twig.php
+++ b/src/Environment.php
@@ -5,7 +5,7 @@ namespace Twig;
 require __DIR__.'/../lib/Twig/Environment.php';
 
 if (\false) {
-    class Twig extends \Twig_Environment
+    class Environment extends \Twig_Environment
     {
     }
 }