diff --git a/addons/mrp/models/mrp_workorder.py b/addons/mrp/models/mrp_workorder.py
index b1c692246b1..967840d4678 100644
--- a/addons/mrp/models/mrp_workorder.py
+++ b/addons/mrp/models/mrp_workorder.py
@@ -236,7 +236,7 @@ class MrpWorkorder(models.Model):
         (self - treated).allowed_lots_domain = False
 
     def name_get(self):
-        return [(wo.id, "%s - %s - %s" % (wo.production_id.name, wo.product_id.name, wo.name)) for wo in self]
+        return [(wo.id, "%s. %s - %s - %s" % (wo.production_id.workorder_ids.ids.index(wo.id) + 1, wo.production_id.name, wo.product_id.name, wo.name)) for wo in self]
 
     def unlink(self):
         # Removes references to workorder to avoid Validation Error