diff --git a/erpnext/patches/v4_2/seprate_manufacture_and_repack.py b/erpnext/patches/v4_2/seprate_manufacture_and_repack.py
index 68cb4303cd2..5b36289bc91 100644
--- a/erpnext/patches/v4_2/seprate_manufacture_and_repack.py
+++ b/erpnext/patches/v4_2/seprate_manufacture_and_repack.py
@@ -5,5 +5,5 @@ from __future__ import unicode_literals
 import frappe
 
 def execute():
-	frappe.db.sql("""update `tabStock Entry` set purpose='Manufacture' where purpose='Manufacture/Repack' and production_order ifnull(purpose,"")!="" """)
-	frappe.db.sql("""update `tabStock Entry` set purpose='Repack' where purpose='Manufacture/Repack' and production_order ifnull(purpose,"")="" """)
\ No newline at end of file
+	frappe.db.sql("""update `tabStock Entry` set purpose='Manufacture' where purpose='Manufacture/Repack' and ifnull(production_order,"")!="" """)
+	frappe.db.sql("""update `tabStock Entry` set purpose='Repack' where purpose='Manufacture/Repack' and ifnull(production_order,"")="" """)
\ No newline at end of file