diff --git a/core/composer.json b/core/composer.json
index 4c4f9267e..a50d99093 100644
--- a/core/composer.json
+++ b/core/composer.json
@@ -4,7 +4,6 @@
         "symfony/http-kernel" : "2.1.*",
         "symfony/routing" : "2.1.*",
         "symfony/config" : "2.1.*",
-        "symfony/yaml" : "2.1.*",
         "symfony/dependency-injection" : "2.1.*",
         "symfony/console" : "2.1.*",
         "symfony/event-dispatcher" : "2.1.*",
diff --git a/core/composer.lock b/core/composer.lock
index ff2df0cda..104cf1723 100644
--- a/core/composer.lock
+++ b/core/composer.lock
@@ -1,5 +1,5 @@
 {
-    "hash": "1d8c7207462e0d701000ae6e732d0301",
+    "hash": "3c86ee22b1c2f391706858ad5eaa28ec",
     "packages": [
         {
             "name": "phing/phing",
@@ -538,53 +538,6 @@
             ],
             "description": "Symfony Routing Component",
             "homepage": "http://symfony.com"
-        },
-        {
-            "name": "symfony/yaml",
-            "version": "v2.1.4",
-            "target-dir": "Symfony/Component/Yaml",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/symfony/Yaml",
-                "reference": "v2.1.4"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://github.com/symfony/Yaml/archive/v2.1.4.zip",
-                "reference": "v2.1.4",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.3"
-            },
-            "time": "2012-11-08 09:51:48",
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "2.1-dev"
-                }
-            },
-            "installation-source": "dist",
-            "autoload": {
-                "psr-0": {
-                    "Symfony\\Component\\Yaml": ""
-                }
-            },
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "http://symfony.com/contributors"
-                }
-            ],
-            "description": "Symfony Yaml Component",
-            "homepage": "http://symfony.com"
         }
     ],
     "packages-dev": null,
diff --git a/index_dev.php b/index_dev.php
index d8a403ff7..490a26338 100644
--- a/index_dev.php
+++ b/index_dev.php
@@ -5,7 +5,7 @@ use Thelia\Core\Thelia;
 
 //use Symfony\Component\DependencyInjection;
 
-$env = 'debug';
+$env = 'dev';
 require __DIR__ . '/core/bootstrap.php';
 
 $trustIp = array(
@@ -19,7 +19,7 @@ if ( false === in_array($request->getClientIp(), $trustIp)) {
     //change request to send to a 404 error page
 }
 
-$thelia = new Thelia('dev', true);
+$thelia = new Thelia($env, true);
 
 $response = $thelia->handle($request)->prepare($request)->send();