diff --git a/src/Symfony/Component/DependencyInjection/Container.php b/src/Symfony/Component/DependencyInjection/Container.php
index c7056297a6df7..b9b195a238eba 100644
--- a/src/Symfony/Component/DependencyInjection/Container.php
+++ b/src/Symfony/Component/DependencyInjection/Container.php
@@ -525,7 +525,7 @@ public function isScopeActive($name)
      */
     public static function camelize($id)
     {
-        return strtr(ucwords(strtr($id, array('_' => ' ', '.' => '_ '))), array(' ' => ''));
+        return strtr(ucwords(strtr($id, array('_' => ' ', '.' => '_ ', '\\' => '_ '))), array(' ' => ''));
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php b/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php
index 6c49982bea6c0..f2d0760192d0d 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ContainerTest.php
@@ -51,6 +51,7 @@ public function dataForTestCamelize()
             array('.foo', '_Foo'),
             array('foo_', 'Foo'),
             array('foo.', 'Foo_'),
+            array('foo\bar', 'Foo_Bar'),
         );
     }