diff --git a/erpnext/buying/doctype/purchase_order/purchase_order.py b/erpnext/buying/doctype/purchase_order/purchase_order.py
index a543c20066..ed761ceb90 100644
--- a/erpnext/buying/doctype/purchase_order/purchase_order.py
+++ b/erpnext/buying/doctype/purchase_order/purchase_order.py
@@ -13,6 +13,7 @@ from erpnext.stock.stock_balance import update_bin_qty, get_ordered_qty
 from frappe.desk.notifications import clear_doctype_notifications
 from erpnext.buying.utils import validate_for_items, check_for_closed_status
 from erpnext.stock.utils import get_bin
+from erpnext.accounts.party import get_party_account_currency
 from six import string_types
 from erpnext.stock.doctype.item.item import get_item_defaults
 from erpnext.setup.doctype.item_group.item_group import get_item_group_defaults
@@ -87,6 +88,8 @@ class PurchaseOrder(BuyingController):
 			standing = frappe.db.get_value("Supplier Scorecard",self.supplier, 'status')
 			frappe.msgprint(_("{0} currently has a {1} Supplier Scorecard standing, and Purchase Orders to this supplier should be issued with caution.").format(self.supplier, standing), title=_("Caution"), indicator='orange')
 
+		self.party_account_currency = get_party_account_currency("Supplier", self.supplier, self.company)
+
 	def validate_minimum_order_qty(self):
 		items = list(set([d.item_code for d in self.get("items")]))