diff --git a/composer.json b/composer.json
index 75b826658e..0fd3d9a76d 100644
--- a/composer.json
+++ b/composer.json
@@ -4,7 +4,8 @@
     "type": "project",
     "description": "The \"Symfony Standard Edition\" distribution",
     "autoload": {
-        "psr-0": { "": "src/", "SymfonyStandard": "app/" }
+        "psr-0": { "SymfonyStandard": "app/" },
+        "psr-4": { "": "src/" }
     },
     "require": {
         "php": ">=5.3.3",