diff --git a/addons/mrp/models/mrp_production.py b/addons/mrp/models/mrp_production.py
index 2297acfb82e..5de10fb8b43 100644
--- a/addons/mrp/models/mrp_production.py
+++ b/addons/mrp/models/mrp_production.py
@@ -691,7 +691,7 @@ class MrpProduction(models.Model):
             list_move_raw = [Command.link(move.id) for move in production.move_raw_ids.filtered(lambda m: not m.bom_line_id)]
             if not production.bom_id and not production._origin.product_id:
                 production.move_raw_ids = list_move_raw
-            if production.product_id != production._origin.product_id:
+            if production.bom_id != production._origin.bom_id:
                 production.move_raw_ids = [Command.clear()]
             if production.bom_id and production.product_id and production.product_qty > 0:
                 # keep manual entries