diff --git a/addons/procurement/procurement.py b/addons/procurement/procurement.py
index a842a4dec9d..d7475c5e489 100644
--- a/addons/procurement/procurement.py
+++ b/addons/procurement/procurement.py
@@ -95,7 +95,7 @@ class procurement_order(osv.osv):
     """
     _name = "procurement.order"
     _description = "Procurement"
-    _order = 'priority desc,date_planned'
+    _order = 'priority desc, date_planned, id asc'
     _inherit = ['mail.thread']
     _log_create = False
     _columns = {