diff --git a/trytond/model/fields/many2one.py b/trytond/model/fields/many2one.py
index 92ecf697..abb41628 100644
--- a/trytond/trytond/model/fields/many2one.py
+++ b/trytond/trytond/model/fields/many2one.py
@@ -25,7 +25,7 @@ class Many2One(Field):
             search_order=None, search_context=None, help='', required=False,
             readonly=False, domain=None, states=None, select=False,
             on_change=None, on_change_with=None, depends=None, context=None,
-            loading='eager'):
+            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 9a7d4026..ba61dffd 100644
--- a/trytond/trytond/model/modelstorage.py
+++ b/trytond/trytond/model/modelstorage.py
@@ -92,9 +92,9 @@ 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('Record Name'), 'get_rec_name',
             searcher='search_rec_name')