diff --git a/create_framework/http_kernel_httpkernelinterface.rst b/create_framework/http_kernel_httpkernelinterface.rst
index 9bda9e5c731..67596297676 100644
--- a/create_framework/http_kernel_httpkernelinterface.rst
+++ b/create_framework/http_kernel_httpkernelinterface.rst
@@ -155,7 +155,7 @@ rest of the content? Edge Side Includes (`ESI`_) to the rescue! Instead of
 generating the whole content in one go, ESI allows you to mark a region of a
 page as being the content of a sub-request call:
 
-.. code-block:: text
+.. code-block:: xml
 
     This is the content of your page