diff --git a/sf_manufacturing/models/mrp_production.py b/sf_manufacturing/models/mrp_production.py
index 14e936a1..9674d5a2 100644
--- a/sf_manufacturing/models/mrp_production.py
+++ b/sf_manufacturing/models/mrp_production.py
@@ -842,6 +842,8 @@ class MrpProduction(models.Model):
                     # self.env['stock.picking'].create_outcontract_picking(consecutive_workorders, production)
                     # self.env['purchase.order'].get_purchase_order(consecutive_workorders, production,
                     #                                               product_id_to_production_names)
+            if not sorted_workorders:
+                return
             for workorders in reversed(sorted_workorders):
                 self.env['stock.picking'].create_outcontract_picking(workorders, production, sorted_workorders)
                 self.env['purchase.order'].get_purchase_order(workorders, production, product_id_to_production_names)