diff --git a/tutorial.py b/tutorial.py
index 7b2cb6c..9f12d08 100644
--- a/tutorial.py
+++ b/tutorial.py
@@ -18,8 +18,7 @@ __all__ = ['GalateaTutorial', 'GalateaTutorialWebSite', 'GalateaTutorialComment'
 class GalateaTutorial(ModelSQL, ModelView):
     "Galatea Tutorial"
     __name__ = 'galatea.tutorial'
-    name = fields.Char('Name', required=True, translate=True,
-        on_change=['name', 'slug'])
+    name = fields.Char('Name', required=True, translate=True)
     slug = fields.Char('slug', required=True, translate=True,
         help='Cannonical uri.')
     slug_langs = fields.Function(fields.Dict(None, 'Slug Langs'), 'get_slug_langs')