diff --git a/patches/may_2013/p06_update_billed_amt_po_pr.py b/patches/may_2013/p06_update_billed_amt_po_pr.py
index 871a7deedcb..3f66c03b8b6 100644
--- a/patches/may_2013/p06_update_billed_amt_po_pr.py
+++ b/patches/may_2013/p06_update_billed_amt_po_pr.py
@@ -6,6 +6,8 @@ def execute():
 	import webnotes
 	webnotes.reload_doc("buying", "doctype", "purchase_order_item")
 	webnotes.reload_doc("stock", "doctype", "purchase_receipt_item")
+	
 	for pi in webnotes.conn.sql("""select name from `tabPurchase Invoice` where docstatus = 1"""):
 		webnotes.get_obj("Purchase Invoice", pi[0], 
-			with_children=1).update_qty(change_modified=False)
\ No newline at end of file
+			with_children=1).update_qty(change_modified=False)
+		webnotes.conn.commit()
\ No newline at end of file