diff -r fc5080f35a0b trytond/model/modelsql.py
--- a/trytond/model/modelsql.py Sat Dec 20 19:24:42 2014 +0100
+++ b/trytond/model/modelsql.py Thu Jan 08 12:11:53 2015 +0100
@@ -1036,6 +1036,9 @@
                     main_table.write_date,
                     main_table.create_date).as_('_datetime'))
             columns.append(Column(main_table, '__id'))
+            order_by.append(Desc(Coalesce(
+                    main_table.write_date,
+                    main_table.create_date).as_('_datetime')))
         if not query:
             columns += [f.sql_column(main_table).as_(n)
                 for n, f in cls._fields.iteritems()