diff --git a/erpnext/controllers/sales_and_purchase_return.py b/erpnext/controllers/sales_and_purchase_return.py
index 611a1fceadd..b713958b1b8 100644
--- a/erpnext/controllers/sales_and_purchase_return.py
+++ b/erpnext/controllers/sales_and_purchase_return.py
@@ -26,7 +26,7 @@ def validate_return_against(doc):
 
 		party_type = "customer" if doc.doctype in ("Sales Invoice", "Delivery Note") else "supplier"
 
-		if ref_doc.company == doc.company and ref_doc.get(party_type) == doc.get(party_type) and ref_doc.docstatus == 1::
+		if ref_doc.company == doc.company and ref_doc.get(party_type) == doc.get(party_type) and ref_doc.docstatus == 1:
 			# validate posting date time
 			return_posting_datetime = "%s %s" % (doc.posting_date, doc.get("posting_time") or "00:00:00")
 			ref_posting_datetime = "%s %s" % (ref_doc.posting_date, ref_doc.get("posting_time") or "00:00:00")