diff --git a/erpnext/patches/v11_1/set_salary_details_submitable.py b/erpnext/patches/v11_1/set_salary_details_submitable.py
index 36e78792ecb..f4477d9fd6d 100644
--- a/erpnext/patches/v11_1/set_salary_details_submitable.py
+++ b/erpnext/patches/v11_1/set_salary_details_submitable.py
@@ -1,12 +1,11 @@
 from __future__ import unicode_literals
 import frappe
-import itertools
 
 def execute():
-	salary_structure = frappe.get_all("Salary Structure", filters={"docstatus": 1}, as_list=1)
-	salary_structure = list(itertools.chain(*salary_structure))
-	salary_structure = "', '".join(map(str, salary_structure))
-
-	query = ''' update `tabSalary Detail` set docstatus=1 where parent in ('{0}')'''.format(salary_structure)
-	frappe.db.sql(query)
+	frappe.db.sql("""
+		update `tabSalary Structure` ss, `tabSalary Detail` sd
+		set sd.docstatus=1
+		where ss.name=sd.parent and ss.docstatus=1 and sd.parenttype='Salary Structure'
+	""")
+