diff --git a/addons/purchase/models/stock.py b/addons/purchase/models/stock.py
index 8f6c1e58fcb..f312fa91c6d 100644
--- a/addons/purchase/models/stock.py
+++ b/addons/purchase/models/stock.py
@@ -190,6 +190,6 @@ class PushedFlow(models.Model):
     _inherit = "stock.location.path"
 
     def _prepare_move_copy_values(self, move_to_copy, new_date):
-        res = super()._prepare_move_copy_values(move_to_copy, new_date)
+        res = super(PushedFlow, self)._prepare_move_copy_values(move_to_copy, new_date)
         res['purchase_line_id'] = None
         return res