diff --git a/trytond/model/fields/one2many.py b/trytond/model/fields/one2many.py
index b21a983a30..b0826081f9 100644
--- a/trytond/model/fields/one2many.py
+++ b/trytond/model/fields/one2many.py
@@ -134,6 +134,8 @@ class One2Many(Field):
             order = []
         if self.order:
             order += self.order
+        elif Target._order:
+            order += Target._order
         targets = []
         for sub_ids in grouped_slice(ids):
             if field._type == 'reference':