diff --git a/erpnext/controllers/buying_controller.py b/erpnext/controllers/buying_controller.py
index d3bcebce479..24ad3a38043 100644
--- a/erpnext/controllers/buying_controller.py
+++ b/erpnext/controllers/buying_controller.py
@@ -447,7 +447,8 @@ class BuyingController(StockController):
 				if not d.schedule_date:
 					d.schedule_date = self.schedule_date
 
-				if d.schedule_date and getdate(d.schedule_date) < getdate(self.transaction_date):
+				if (d.schedule_date and self.transaction_date and
+					getdate(d.schedule_date) < getdate(self.transaction_date)):
 					frappe.throw(_("Row #{0}: Reqd by Date cannot be before Transaction Date").format(d.idx))
 		else:
 			frappe.throw(_("Please enter Reqd by Date"))