diff --git a/odoo/models.py b/odoo/models.py
index bd499ad9f9f..879b209e395 100644
--- a/odoo/models.py
+++ b/odoo/models.py
@@ -2408,7 +2408,7 @@ class BaseModel(MetaModel('DummyModel', (object,), {'_register': False})):
                     continue            # don't update custom fields
                 new = field.update_db(self, columns)
                 if new and field.compute:
-                    fields_to_compute.append(field)
+                    fields_to_compute.append(field.name)
 
             if fields_to_compute:
                 @self.pool.post_init
@@ -2416,7 +2416,7 @@ class BaseModel(MetaModel('DummyModel', (object,), {'_register': False})):
                     recs = self.with_context(active_test=False).search([])
                     for field in fields_to_compute:
                         _logger.info("Storing computed values of %s", field)
-                        self.env.add_to_compute(field, recs)
+                        self.env.add_to_compute(recs._fields[field], recs)
 
         if self._auto:
             self._add_sql_constraints()