diff --git a/addons/mrp/models/mrp_bom.py b/addons/mrp/models/mrp_bom.py
index 3f9564caf6c..06e3479c190 100644
--- a/addons/mrp/models/mrp_bom.py
+++ b/addons/mrp/models/mrp_bom.py
@@ -172,7 +172,7 @@ class MrpBom(models.Model):
 
 class MrpBomLine(models.Model):
     _name = 'mrp.bom.line'
-    _order = "sequence"
+    _order = "sequence, id"
     _rec_name = "product_id"
 
     def _get_default_product_uom_id(self):