diff --git a/trytond/model/fields/many2one.py b/trytond/model/fields/many2one.py
index 2a697c6f..12e94253 100644
--- a/trytond/trytond/model/fields/many2one.py
+++ b/trytond/trytond/model/fields/many2one.py
@@ -22,7 +22,7 @@ class Many2One(Field):
             ondelete='SET NULL', datetime_field=None, target_search='join',
             help='', required=False, readonly=False, domain=None, states=None,
             select=False, on_change=None, on_change_with=None, depends=None,
-            context=None, loading='eager'):
+            context=None, loading='lazy'):
         '''
         :param model_name: The name of the target model.
         :param left: The name of the field to store the left value for
diff --git a/trytond/model/modelstorage.py b/trytond/model/modelstorage.py
index 1d885ad1..87cb51b2 100644
--- a/trytond/trytond/model/modelstorage.py
+++ b/trytond/trytond/model/modelstorage.py
@@ -48,9 +48,9 @@ class ModelStorage(Model):
     """
 
     create_uid = fields.Many2One('res.user', 'Create User', readonly=True)
-    create_date = fields.Timestamp('Create Date', readonly=True)
+    create_date = fields.Timestamp('Create Date', readonly=True, loading='lazy')
     write_uid = fields.Many2One('res.user', 'Write User', readonly=True)
-    write_date = fields.Timestamp('Write Date', readonly=True)
+    write_date = fields.Timestamp('Write Date', readonly=True, loading='lazy')
     rec_name = fields.Function(fields.Char('Name'), 'get_rec_name',
             searcher='search_rec_name')