diff --git a/cookbook/bundles/extension.rst b/cookbook/bundles/extension.rst
index 302e4092eb8..70dd030b89b 100644
--- a/cookbook/bundles/extension.rst
+++ b/cookbook/bundles/extension.rst
@@ -97,7 +97,7 @@ Creating an Extension Class
 
 If you do choose to expose a semantic configuration for your bundle, you'll
 first need to create a new "Extension" class, which will handle the process.
-This class should live in the ``DependenyInjection`` directory of your bundle
+This class should live in the ``DependencyInjection`` directory of your bundle
 and its name should be constructed by replacing the ``Bundle`` postfix of the
 Bundle class name with ``Extension``. For example, the Extension class of
 ``AcmeHelloBundle`` would be called ``AcmeHelloExtension``::
@@ -528,4 +528,4 @@ file. Once again, this is because the Extension class doesn't follow the
 standards set out above, so nothing happens automatically.
 
 .. _`FrameworkBundle Configuration`: https://github.com/symfony/symfony/blob/master/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
-.. _`TwigBundle Configuration`: https://github.com/symfony/symfony/blob/master/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
\ No newline at end of file
+.. _`TwigBundle Configuration`: https://github.com/symfony/symfony/blob/master/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php