diff --git a/stateful/README.txt b/stateful/README.txt
index f095470..93a5eeb 100644
--- a/stateful/README.txt
+++ b/stateful/README.txt
@@ -37,7 +37,7 @@ More complex states definitions
 We'll use a predefined simple publishing workflow that.
 
   >>> from cybertools.stateful.publishing import simplePublishing
-  >>> registerStatesDefinition(simplePublishing)
+  >>> registerStatesDefinition(simplePublishing())
 
   >>> demo = Demo()
   >>> demo.statesDefinition = 'publishing'
diff --git a/stateful/publishing.py b/stateful/publishing.py
index 80f8751..1f45f4f 100644
--- a/stateful/publishing.py
+++ b/stateful/publishing.py
@@ -22,18 +22,17 @@ Definition of a simple publishing workflow.
 $Id$
 """
 
-from zope.interface import implements
+from zope.interface import implementer
 
 from cybertools.stateful.definition import registerStatesDefinition
 from cybertools.stateful.definition import StatesDefinition
 from cybertools.stateful.definition import State, Transition
+from cybertools.stateful.interfaces import IStatesDefinition
 
 
-def simplePublishingFactory():
-    return simplePublishing
-
-
-simplePublishing = StatesDefinition('publishing',
+@implementer(IStatesDefinition)
+def simplePublishing():
+    return StatesDefinition('publishing',
         State('private', 'private', ('show',)),
         State('draft', 'draft', ('publish', 'hide',)),
         State('published', 'published', ('retract',)),