diff --git a/erpnext/patches/july_2012/remove_event_role_owner_match.py b/erpnext/patches/july_2012/remove_event_role_owner_match.py
index deb99cf..a74ef80 100644
--- a/erpnext/patches/july_2012/remove_event_role_owner_match.py
+++ b/erpnext/patches/july_2012/remove_event_role_owner_match.py
@@ -1,5 +1,5 @@
 def execute():
 	import webnotes
 	webnotes.conn.sql("""\
-		update `tabDocPerm` set match=NULL
+		update `tabDocPerm` set `match`=NULL
 		where parent='Event' and role='All' and permlevel=0""")
\ No newline at end of file