diff --git a/trytond/trytond/ir/model.py b/trytond/trytond/ir/model.py
index 51fe0aab0b..3064653569 100644
--- a/trytond/trytond/ir/model.py
+++ b/trytond/trytond/ir/model.py
@@ -246,6 +246,7 @@ class ModelField(ModelSQL, ModelView):
     access = fields.Boolean(
         "Access",
         states={
+            'readonly': Bool(Eval('module')),
             'invisible': ~Eval('relation'),
             },
         depends=['relation'],