--- a/src/pyams_utils/context.py	Mon Jun 19 16:26:33 2017 +0200
+++ b/src/pyams_utils/context.py	Mon Jun 19 17:29:46 2017 +0200
@@ -26,6 +26,8 @@
     This selector can be used as a subscriber predicate to define
     an interface that the context must support for the event to be applied::
 
+    .. code-block:: python
+
         from pyams_utils.interfaces.site import ISiteRoot
 
         @subscriber(IObjectModifiedEvent, context_selector=ISiteRoot)