diff --git a/patches/march_2013/p10_update_against_expense_account.py b/patches/march_2013/p10_update_against_expense_account.py
new file mode 100644
index 0000000..d1bad5c
--- /dev/null
+++ b/patches/march_2013/p10_update_against_expense_account.py
@@ -0,0 +1,11 @@
+def execute():
+	import webnotes
+	from webnotes import get_obj
+	pi_list = webnotes.conn.sql("""select name from `tabPurchase Invoice` 
+		where docstatus = 1 and ifnull(against_expense_account, '') = ''""")
+		
+	for pi in pi_list:
+	    pi_obj = get_obj("Purchase Invoice", pi[0], with_children=1)
+	    pi_obj.set_against_expense_account()
+	    webnotes.conn.set_value("Purchase Invoice", pi[0], 
+			"against_expense_account", pi_obj.doc.against_expense_account)
\ No newline at end of file
diff --git a/patches/patch_list.py b/patches/patch_list.py
index 0c5427b..5eff170 100644
--- a/patches/patch_list.py
+++ b/patches/patch_list.py
@@ -219,4 +219,5 @@
 	"execute:webnotes.bean('Style Settings').save() #2013-03-25",
 	"execute:webnotes.conn.set_value('Email Settings', None, 'send_print_in_body_and_attachment', 1)",
 	"patches.march_2013.p09_unset_user_type_partner",
+	"patches.march_2013.p10_update_against_expense_account",
 ]
\ No newline at end of file