diff --git a/erpnext/patches/september_2012/all_permissions_patch.py b/erpnext/patches/september_2012/all_permissions_patch.py
index e962874..eea4345 100644
--- a/erpnext/patches/september_2012/all_permissions_patch.py
+++ b/erpnext/patches/september_2012/all_permissions_patch.py
@@ -19,4 +19,5 @@
 		'Sales and Purchase Return Tool') and role='All' and permlevel=0""")
 		
 def account_perms():
+	# since it is a child doctype, it does not need permissions
 	webnotes.conn.sql("""delete from tabDocPerm where parent='TDS Detail'""")