diff --git a/addons/stock/models/stock_production_lot.py b/addons/stock/models/stock_production_lot.py
index 4a8068b2936..870d061f0fe 100644
--- a/addons/stock/models/stock_production_lot.py
+++ b/addons/stock/models/stock_production_lot.py
@@ -40,8 +40,8 @@ class ProductionLot(models.Model):
         # We look if the first lot contains at least one digit.
         caught_initial_number = regex_findall(r"\d+", first_lot)
         if not caught_initial_number:
-            raise UserError(_('The lot name must contain at least one digit.'))
-        # We base the serie on the last number found in the base lot.
+            return self.generate_lot_names(first_lot + "0", count)
+        # We base the series on the last number found in the base lot.
         initial_number = caught_initial_number[-1]
         padding = len(initial_number)
         # We split the lot name to get the prefix and suffix.
diff --git a/addons/stock/tests/test_generate_serial_numbers.py b/addons/stock/tests/test_generate_serial_numbers.py
index 07cb40cfaa7..ff1e25fc3fa 100644
--- a/addons/stock/tests/test_generate_serial_numbers.py
+++ b/addons/stock/tests/test_generate_serial_numbers.py
@@ -191,15 +191,17 @@ class StockGenerate(TransactionCase):
             default_move_id=move.id,
             default_next_serial_number='code-xxx',
         ))
-        wiz = form_wizard.save()
-        with self.assertRaises(UserError):
-            wiz.generate_serial_numbers()
 
         form_wizard.next_serial_count = 0
         # Must raise an exception because `next_serial_count` must be greater than 0.
         with self.assertRaises(ValidationError):
             form_wizard.save()
 
+        form_wizard.next_serial_count = 3
+        wiz = form_wizard.save()
+        wiz.generate_serial_numbers()
+        self.assertEqual(move.move_line_nosuggest_ids.mapped('lot_name'), ["code-xxx0", "code-xxx1", "code-xxx2"])
+
     def test_generate_04_generate_in_multiple_time(self):
         """ Generates a Serial Number for each move lines (except the last one)
         but with multiple assignments, and checks the generated Serial Numbers