diff --git a/trytond/ir/ui/view.py b/trytond/ir/ui/view.py
index 65895cd5b6..437095a7ce 100644
--- a/trytond/ir/ui/view.py
+++ b/trytond/ir/ui/view.py
@@ -217,6 +217,7 @@ class View(ModelSQL, ModelView):
 class ShowViewStart(ModelView):
     'Show view'
     __name__ = 'ir.ui.view.show.start'
+    __no_slots__ = True
 
 
 class ShowView(Wizard):