diff --git a/stock_no_negative/models/stock_quant.py b/stock_no_negative/models/stock_quant.py
index 6af202a2e36f..2b18fcb09a0d 100644
--- a/stock_no_negative/models/stock_quant.py
+++ b/stock_no_negative/models/stock_quant.py
@@ -39,7 +39,7 @@ def check_negative_qty(self):
             ):
                 msg_add = ""
                 if quant.lot_id:
-                    msg_add = _(" lot {}").format(quant.lot_id.name_get()[0][1])
+                    msg_add = _(" lot {}").format(quant.lot_id.display_name)
                 raise ValidationError(
                     _(
                         "You cannot validate this stock operation because the "