diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
index c26f527..91a44b3 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.js
@@ -313,6 +313,10 @@
 		erpnext.setup_serial_no();
 	},
 
+	packed_items_on_form_rendered: function(doc, grid_row) {
+		erpnext.setup_serial_no();
+	},
+
 	make_sales_return: function() {
 		frappe.model.open_mapped_doc({
 			method: "erpnext.accounts.doctype.sales_invoice.sales_invoice.make_sales_return",
diff --git a/erpnext/selling/doctype/quotation/quotation.js b/erpnext/selling/doctype/quotation/quotation.js
index c708de0..6f7bfb3 100644
--- a/erpnext/selling/doctype/quotation/quotation.js
+++ b/erpnext/selling/doctype/quotation/quotation.js
@@ -206,7 +206,7 @@
 
 }
 
-frappe.ui.form.on("Quotation Item", "items_on_form_rendered", function(frm, cdt, cdn) {
+frappe.ui.form.on("Quotation Item", "items_on_form_rendered", "packed_items_on_form_rendered", function(frm, cdt, cdn) {
 	// enable tax_amount field if Actual
 })
 
diff --git a/erpnext/stock/doctype/delivery_note/delivery_note.js b/erpnext/stock/doctype/delivery_note/delivery_note.js
index 9a15484..f8a3497 100644
--- a/erpnext/stock/doctype/delivery_note/delivery_note.js
+++ b/erpnext/stock/doctype/delivery_note/delivery_note.js
@@ -223,6 +223,10 @@
 		erpnext.setup_serial_no();
 	},
 
+	packed_items_on_form_rendered: function(doc, grid_row) {
+		erpnext.setup_serial_no();
+	},
+
 	close_delivery_note: function(doc){
 		this.update_status("Closed")
 	},