diff --git a/jikimo_purchase_request/wizard/purchase_request_line_make_purchase_order.py b/jikimo_purchase_request/wizard/purchase_request_line_make_purchase_order.py
index 5ce84967..42118cb4 100644
--- a/jikimo_purchase_request/wizard/purchase_request_line_make_purchase_order.py
+++ b/jikimo_purchase_request/wizard/purchase_request_line_make_purchase_order.py
@@ -116,6 +116,9 @@ class PurchaseRequestLineMakePurchaseOrder(models.TransientModel):
         po_line.date_planned = datetime(
             date_required.year, date_required.month, date_required.day
         )
+
+    def button_in_progress(self):
+        return self.write({"state": "in_progress"})
         
 
 class PurchaseRequestLineMakePurchaseOrderItem(models.TransientModel):