diff --git a/erpnext/patches/sal_man_patch.py b/erpnext/patches/sal_man_patch.py
index 1154f98..aef6251 100644
--- a/erpnext/patches/sal_man_patch.py
+++ b/erpnext/patches/sal_man_patch.py
@@ -2,4 +2,7 @@
 def execute():
 	import webnotes
 	from webnotes.modules.module_manager import reload_doc
+	sql = webnotes.conn.sql
+
 	reload_doc('hr', 'doctype', 'salary_manager')
+	sql("delete from `tabDocField` where parent = 'Salary Manager' and fieldname = 'employment_type'")