diff --git a/erpnext/stock/doctype/serial_no/serial_no.py b/erpnext/stock/doctype/serial_no/serial_no.py
index 3d1979d..e04343d 100644
--- a/erpnext/stock/doctype/serial_no/serial_no.py
+++ b/erpnext/stock/doctype/serial_no/serial_no.py
@@ -81,9 +81,9 @@
 			self.purchase_date = purchase_sle.posting_date
 			self.purchase_time = purchase_sle.posting_time
 			self.purchase_rate = purchase_sle.incoming_rate
-			if purchase_sle.voucher_type == "Purchase Receipt":
+			if purchase_sle.voucher_type in ("Purchase Receipt", "Purchase Invoice"):
 				self.supplier, self.supplier_name = \
-					frappe.db.get_value("Purchase Receipt", purchase_sle.voucher_no,
+					frappe.db.get_value(purchase_sle.voucher_type, purchase_sle.voucher_no,
 						["supplier", "supplier_name"])
 
 			# If sales return entry
@@ -253,8 +253,8 @@
 
 	status = False
 	if sn.purchase_document_no:
-		if sle.voucher_type in ['Purchase Receipt', 'Stock Entry'] and \
-			sn.delivery_document_type not in ['Purchase Receipt', 'Stock Entry']:
+		if sle.voucher_type in ['Purchase Receipt', 'Stock Entry', "Purchase Invoice"] and \
+			sn.delivery_document_type not in ['Purchase Receipt', 'Stock Entry', "Purchase Invoice"]:
 			status = True
 
 		if status and sle.voucher_type == 'Stock Entry' and \