diff --git a/odoo/addons/base/ir/ir_model.py b/odoo/addons/base/ir/ir_model.py
index dc195524bf1..a73431f58bb 100644
--- a/odoo/addons/base/ir/ir_model.py
+++ b/odoo/addons/base/ir/ir_model.py
@@ -850,8 +850,6 @@ class IrModelFields(models.Model):
         # add compute function if given
         if field_data['compute']:
             attrs['compute'] = make_compute(field_data['compute'], field_data['depends'])
-        if field_data.get('sparse'):
-            attrs['sparse'] = field_data['sparse']
         return attrs
 
     def _instanciate(self, field_data, partial):
diff --git a/odoo/modules/registry.py b/odoo/modules/registry.py
index bd22d12a94c..4c23ea5fd03 100644
--- a/odoo/modules/registry.py
+++ b/odoo/modules/registry.py
@@ -215,15 +215,9 @@ class Registry(Mapping):
         if self._fields_by_model is None:
             # Query manual fields for all models at once
             self._fields_by_model = dic = defaultdict(dict)
-            id2name = {}
             cr.execute('SELECT * FROM ir_model_fields WHERE state=%s', ('manual',))
             for field in cr.dictfetchall():
                 dic[field['model']][field['name']] = field
-                id2name[field['id']] = field['name']
-            # compute the attribute 'sparse'
-            for fields in dic.values():
-                for name, field in fields.items():
-                    field['sparse'] = id2name.get(field['serialization_field_id'])
         return self._fields_by_model[model_name]
 
     def do_parent_store(self, cr):