diff --git a/erpnext/patches/v12_0/add_variant_of_in_item_attribute_table.py b/erpnext/patches/v12_0/add_variant_of_in_item_attribute_table.py
index bb13078b138..893f7a4909e 100644
--- a/erpnext/patches/v12_0/add_variant_of_in_item_attribute_table.py
+++ b/erpnext/patches/v12_0/add_variant_of_in_item_attribute_table.py
@@ -1,6 +1,7 @@
 import frappe
 
 def execute():
+	frappe.reload_doc('stock', 'doctype', 'item_variant_attribute')
 	frappe.db.sql('''
 		UPDATE `tabItem Variant Attribute` t1
 		INNER JOIN `tabItem` t2 ON t2.name = t1.parent