diff --git a/eu_einvoice/european_e_invoice/custom/sales_invoice.py b/eu_einvoice/european_e_invoice/custom/sales_invoice.py
index 54ff272..478fe59 100644
--- a/eu_einvoice/european_e_invoice/custom/sales_invoice.py
+++ b/eu_einvoice/european_e_invoice/custom/sales_invoice.py
@@ -125,8 +125,8 @@ def create_einvoice(self):
 		if self.invoice.po_no:
 			self.doc.trade.agreement.buyer_order.issuer_assigned_id = self.invoice.po_no
 
-		if self.invoice.po_date:
-			self.doc.trade.agreement.buyer_order.issue_date_time = getdate(self.invoice.po_date)
+			if self.invoice.po_date:
+				self.doc.trade.agreement.buyer_order.issue_date_time = getdate(self.invoice.po_date)
 
 		sales_orders = set()
 		for item in self.invoice.items: