diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index bfce346..3e4bc81 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -93,3 +93,4 @@
 erpnext.patches.v4_2.discount_amount
 erpnext.patches.v4_2.update_landed_cost_voucher
 erpnext.patches.v4_2.set_item_has_batch
+erpnext.patches.v4_2.update_stock_uom_for_dn_in_sle
diff --git a/erpnext/patches/v4_2/update_stock_uom_for_dn_in_sle.py b/erpnext/patches/v4_2/update_stock_uom_for_dn_in_sle.py
new file mode 100644
index 0000000..4e9945e
--- /dev/null
+++ b/erpnext/patches/v4_2/update_stock_uom_for_dn_in_sle.py
@@ -0,0 +1,11 @@
+# Copyright (c) 2013, Web Notes Technologies Pvt. Ltd. and Contributors
+# License: GNU General Public License v3. See license.txt
+
+from __future__ import unicode_literals
+import frappe
+
+def execute():
+	frappe.db.sql("""update `tabStock Ledger Entry` sle, tabItem item
+		set sle.stock_uom = item.stock_uom
+		where sle.voucher_type="Delivery Note" and item.name = sle.item_code
+		and sle.stock_uom != item.stock_uom""")
diff --git a/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py b/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py
index 58a4412..b5de255 100644
--- a/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py
+++ b/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py
@@ -52,7 +52,7 @@
 			frappe.throw(_("Actual Qty is mandatory"))
 
 	def validate_item(self):
-		item_det = frappe.db.sql("""select name, has_batch_no, docstatus, is_stock_item
+		item_det = frappe.db.sql("""select name, has_batch_no, docstatus, is_stock_item, stock_uom
 			from tabItem where name=%s""", self.item_code, as_dict=True)[0]
 
 		if item_det.is_stock_item != 'Yes':