diff --git a/src/Symfony/Bundle/DoctrineBundle/DependencyInjection/DoctrineExtension.php b/src/Symfony/Bundle/DoctrineBundle/DependencyInjection/DoctrineExtension.php
index d0cf4da53b..2d8395d3d8 100644
--- a/src/Symfony/Bundle/DoctrineBundle/DependencyInjection/DoctrineExtension.php
+++ b/src/Symfony/Bundle/DoctrineBundle/DependencyInjection/DoctrineExtension.php
@@ -26,11 +26,6 @@ use Symfony\Component\DependencyInjection\Resource\FileResource;
  */
 class DoctrineExtension extends Extension
 {
-    protected $resources = array(
-        'dbal' => 'dbal.xml',
-        'orm'  => 'orm.xml',
-    );
-
     /**
      * Loads the DBAL configuration.
      *
@@ -74,7 +69,7 @@ class DoctrineExtension extends Extension
     {
         if (!$container->hasDefinition('doctrine.dbal.logger')) {
             $loader = new XmlFileLoader($container, __DIR__.'/../Resources/config');
-            $loader->load($this->resources['dbal']);
+            $loader->load('dbal.xml');
         }
 
         $defaultConnectionName = isset($config['default_connection']) ? $config['default_connection'] : $container->getParameter('doctrine.dbal.default_connection');
@@ -209,7 +204,7 @@ class DoctrineExtension extends Extension
     {
         if (!$container->hasDefinition('doctrine.orm.metadata_driver.annotation')) {
             $loader = new XmlFileLoader($container, __DIR__.'/../Resources/config');
-            $loader->load($this->resources['orm']);
+            $loader->load('orm.xml');
         }
 
         // Allow these application configuration options to override the defaults
diff --git a/src/Symfony/Bundle/DoctrineMongoDBBundle/DependencyInjection/DoctrineMongoDBExtension.php b/src/Symfony/Bundle/DoctrineMongoDBBundle/DependencyInjection/DoctrineMongoDBExtension.php
index 8ecdcda2eb..130637e82c 100755
--- a/src/Symfony/Bundle/DoctrineMongoDBBundle/DependencyInjection/DoctrineMongoDBExtension.php
+++ b/src/Symfony/Bundle/DoctrineMongoDBBundle/DependencyInjection/DoctrineMongoDBExtension.php
@@ -18,10 +18,6 @@ use Symfony\Component\DependencyInjection\Resource\FileResource;
  */
 class DoctrineMongoDBExtension extends Extension
 {
-    protected $resources = array(
-        'mongodb' => 'mongodb.xml',
-    );
-
     /**
      * Loads the MongoDB ODM configuration.
      *
@@ -67,7 +63,7 @@ class DoctrineMongoDBExtension extends Extension
         if (!$container->hasDefinition('doctrine.odm.mongodb.metadata.annotation')) {
             // Load DoctrineMongoDBBundle/Resources/config/mongodb.xml
             $loader = new XmlFileLoader($container, __DIR__.'/../Resources/config');
-            $loader->load($this->resources['mongodb']);
+            $loader->load('mongodb.xml');
         }
 
         // Allow these application configuration options to override the defaults
diff --git a/src/Symfony/Bundle/PropelBundle/DependencyInjection/PropelExtension.php b/src/Symfony/Bundle/PropelBundle/DependencyInjection/PropelExtension.php
index 029a2fe048..011cd58310 100644
--- a/src/Symfony/Bundle/PropelBundle/DependencyInjection/PropelExtension.php
+++ b/src/Symfony/Bundle/PropelBundle/DependencyInjection/PropelExtension.php
@@ -10,10 +10,6 @@ use Symfony\Component\DependencyInjection\Reference;
 
 class PropelExtension extends Extension
 {
-    protected $resources = array(
-        'propel' => 'propel.xml',
-    );
-
     /**
      * Loads the Propel configuration.
      *
@@ -24,7 +20,7 @@ class PropelExtension extends Extension
     {
         if (!$container->hasDefinition('propel')) {
             $loader = new XmlFileLoader($container, __DIR__.'/../Resources/config');
-            $loader->load($this->resources['propel']);
+            $loader->load('propel.xml');
         }
 
         if (!$container->hasParameter('propel.path')) {
@@ -54,7 +50,7 @@ class PropelExtension extends Extension
     {
         if (!$container->hasDefinition('propel')) {
             $loader = new XmlFileLoader($container, __DIR__.'/../Resources/config');
-            $loader->load($this->resources['propel']);
+            $loader->load('propel.xml');
         }
 
         $defaultConnection = array(
diff --git a/src/Symfony/Bundle/SwiftmailerBundle/DependencyInjection/SwiftmailerExtension.php b/src/Symfony/Bundle/SwiftmailerBundle/DependencyInjection/SwiftmailerExtension.php
index 04972ee81f..fd8891236a 100644
--- a/src/Symfony/Bundle/SwiftmailerBundle/DependencyInjection/SwiftmailerExtension.php
+++ b/src/Symfony/Bundle/SwiftmailerBundle/DependencyInjection/SwiftmailerExtension.php
@@ -23,10 +23,6 @@ use Symfony\Component\DependencyInjection\Reference;
  */
 class SwiftMailerExtension extends Extension
 {
-    protected $resources = array(
-        'mailer' => 'swiftmailer.xml',
-    );
-
     /**
      * Loads the Swift Mailer configuration.
      *
@@ -45,7 +41,7 @@ class SwiftMailerExtension extends Extension
     {
         if (!$container->hasDefinition('swiftmailer.mailer')) {
             $loader = new XmlFileLoader($container, __DIR__.'/../Resources/config');
-            $loader->load($this->resources['mailer']);
+            $loader->load('swiftmailer.xml');
             $container->setAlias('mailer', 'swiftmailer.mailer');
         }