diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
index f59ad4e5b3240..fa3c105e6f939 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
@@ -558,7 +558,7 @@ private function createUserProviders($config, ContainerBuilder $container)
     // Parses a <provider> tag and returns the id for the related user provider service
     private function createUserDaoProvider($name, $provider, ContainerBuilder $container)
     {
-        $name = $this->getUserProviderId(strtolower($name));
+        $name = $this->getUserProviderId($name);
 
         // Doctrine Entity and In-memory DAO provider are managed by factories
         foreach ($this->userProviderFactories as $factory) {
@@ -582,7 +582,7 @@ private function createUserDaoProvider($name, $provider, ContainerBuilder $conta
         if (isset($provider['chain'])) {
             $providers = array();
             foreach ($provider['chain']['providers'] as $providerName) {
-                $providers[] = new Reference($this->getUserProviderId(strtolower($providerName)));
+                $providers[] = new Reference($this->getUserProviderId($providerName));
             }
 
             $container
@@ -597,7 +597,7 @@ private function createUserDaoProvider($name, $provider, ContainerBuilder $conta
 
     private function getUserProviderId($name)
     {
-        return 'security.user.provider.concrete.'.$name;
+        return 'security.user.provider.concrete.'.strtolower($name);
     }
 
     private function createExceptionListener($container, $config, $id, $defaultEntryPoint, $stateless)
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/CamelCasedProviders/bundles.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/CamelCasedProviders/bundles.php
new file mode 100644
index 0000000000000..86614bdb891de
--- /dev/null
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/CamelCasedProviders/bundles.php
@@ -0,0 +1,16 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+return array(
+    new Doctrine\Bundle\DoctrineBundle\DoctrineBundle(),
+    new Symfony\Bundle\SecurityBundle\SecurityBundle(),
+    new Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
+);
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/CamelCasedProviders/config.yml b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/CamelCasedProviders/config.yml
new file mode 100644
index 0000000000000..0b21534ecf420
--- /dev/null
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/CamelCasedProviders/config.yml
@@ -0,0 +1,30 @@
+imports:
+    - { resource: ./../config/framework.yml }
+
+doctrine:
+    dbal:
+        driver:   pdo_sqlite
+        memory:   true
+        charset:  UTF8
+
+    orm:
+        entity_managers:
+            default:
+
+                auto_mapping: true
+
+security:
+    providers:
+        camelCasedName:
+            entity:
+                class: Symfony\Component\Security\Core\User\User
+
+    firewalls:
+        default:
+            anonymous: ~
+            provider: camelCasedName
+
+    encoders:
+        Symfony\Component\Security\Core\User\User: plaintext
+
+
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/CamelCasedProvidersCausesExceptionsTest.php b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/CamelCasedProvidersCausesExceptionsTest.php
new file mode 100644
index 0000000000000..41db3338da97d
--- /dev/null
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/CamelCasedProvidersCausesExceptionsTest.php
@@ -0,0 +1,20 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bundle\SecurityBundle\Tests\Functional;
+
+class CamelCasedProvidersCausesExceptionsTest extends WebTestCase
+{
+    public function testBugfixExceptionThenCamelCasedProviderIsGiven()
+    {
+        $client = $this->createClient(array('test_case' => 'CamelCasedProviders', 'root_config' => 'config.yml'));
+    }
+}