diff --git a/erpnext/controllers/sales_and_purchase_return.py b/erpnext/controllers/sales_and_purchase_return.py
index 8595292..81fdbbe 100644
--- a/erpnext/controllers/sales_and_purchase_return.py
+++ b/erpnext/controllers/sales_and_purchase_return.py
@@ -72,7 +72,7 @@
 
 	items_returned = False
 	for d in doc.get("items"):
-		if d.item_code and (flt(d.qty) < 0 or d.get('received_qty') < 0):
+		if d.item_code and (flt(d.qty) < 0 or flt(d.get('received_qty')) < 0):
 			if d.item_code not in valid_items:
 				frappe.throw(_("Row # {0}: Returned Item {1} does not exists in {2} {3}")
 					.format(d.idx, d.item_code, doc.doctype, doc.return_against))