fixed issue
diff --git a/patches/february_2013/account_negative_balance.py b/patches/february_2013/account_negative_balance.py
index 059ab63..a57b01e 100644
--- a/patches/february_2013/account_negative_balance.py
+++ b/patches/february_2013/account_negative_balance.py
@@ -1,4 +1,4 @@
 def execute():
 	import webnotes
-	webnotes.reload_doc("accounts", "doctype", "Account")
+	webnotes.reload_doc("accounts", "doctype", "account")
 	webnotes.conn.sql("update `tabAccount` set allow_negative_balance = 1")
\ No newline at end of file