diff --git a/stock_picking_barcode/models/stock_picking.py b/stock_picking_barcode/models/stock_picking.py
index a3f1ba6..ff54a2e 100644
--- a/stock_picking_barcode/models/stock_picking.py
+++ b/stock_picking_barcode/models/stock_picking.py
@@ -41,7 +41,7 @@ def on_barcode_scanned(self, barcode):
                                     'The barcode "%(barcode)s" does not match any '
                                     'product on this picking.'
                                 )
-                                % {"barcode": barcode},
+                                % {"barcode": product.barcode},
                             }
                         }
                     else: