diff --git a/odoo/modules/registry.py b/odoo/modules/registry.py
index 568ae14f926..620496045e4 100644
--- a/odoo/modules/registry.py
+++ b/odoo/modules/registry.py
@@ -273,6 +273,7 @@ class Registry(Mapping):
 
         return self.descendants(model_names, '_inherit', '_inherits')
 
+    @locked
     def setup_models(self, cr):
         """ Complete the setup of models.
             This must be called after loading modules and before using the ORM.