diff --git a/addons/sale/wizard/sale_line_invoice.py b/addons/sale/wizard/sale_line_invoice.py
index 3c96c527dad..60036279131 100644
--- a/addons/sale/wizard/sale_line_invoice.py
+++ b/addons/sale/wizard/sale_line_invoice.py
@@ -100,6 +100,7 @@ class sale_order_line_make_invoice(osv.osv_memory):
                     flag = False
                     break
             if flag:
+                line.order_id.write({'state': 'progress'})
                 workflow.trg_validate(uid, 'sale.order', order.id, 'all_lines', cr)
 
         if not invoices: