diff --git a/addons/mrp/models/mrp_production.py b/addons/mrp/models/mrp_production.py
index 13aac4c6683..0ea7685d0ea 100644
--- a/addons/mrp/models/mrp_production.py
+++ b/addons/mrp/models/mrp_production.py
@@ -1211,10 +1211,21 @@ class MrpProduction(models.Model):
 
     def action_generate_serial(self):
         self.ensure_one()
+        if self.product_id.tracking == 'lot':
+            name = self.env['ir.sequence'].next_by_code('stock.lot.serial')
+            exist_lot = self.env['stock.lot'].search([
+                ('product_id', '=', self.product_id.id),
+                ('company_id', '=', self.company_id.id),
+                ('name', '=', name),
+            ], limit=1)
+            if exist_lot:
+                name = self.env['stock.lot']._get_next_serial(self.company_id, self.product_id)
+        else:
+            name = self.env['stock.lot']._get_next_serial(self.company_id, self.product_id) or self.env['ir.sequence'].next_by_code('stock.lot.serial')
         self.lot_producing_id = self.env['stock.lot'].create({
             'product_id': self.product_id.id,
             'company_id': self.company_id.id,
-            'name': self.env['stock.lot']._get_next_serial(self.company_id, self.product_id) or self.env['ir.sequence'].next_by_code('stock.lot.serial'),
+            'name': name,
         })
         if self.product_id.tracking == 'serial':
             self._set_qty_producing()