diff --git a/odoo/addons/base/ir/ir_model.py b/odoo/addons/base/ir/ir_model.py
index 9a105eb2415..c989dd4efc5 100644
--- a/odoo/addons/base/ir/ir_model.py
+++ b/odoo/addons/base/ir/ir_model.py
@@ -152,11 +152,11 @@ class IrModel(models.Model):
     def write(self, vals):
         if '__last_update' in self._context:
             self = self.with_context({k: v for k, v in self._context.iteritems() if k != '__last_update'})
-        if 'model' in vals:
+        if 'model' in vals and any(rec.model != vals['model'] for rec in self):
             raise UserError(_('Field "Model" cannot be modified on models.'))
-        if 'state' in vals:
+        if 'state' in vals and any(rec.state != vals['state'] for rec in self):
             raise UserError(_('Field "Type" cannot be modified on models.'))
-        if 'transient' in vals:
+        if 'transient' in vals and any(rec.transient != vals['transient'] for rec in self):
             raise UserError(_('Field "Transient Model" cannot be modified on models.'))
         # Filter out operations 4 from field id, because the web client always
         # writes (4,id,False) even for non dirty items.