diff --git a/erpnext/controllers/sales_and_purchase_return.py b/erpnext/controllers/sales_and_purchase_return.py
index 899d1c1..de4d280 100644
--- a/erpnext/controllers/sales_and_purchase_return.py
+++ b/erpnext/controllers/sales_and_purchase_return.py
@@ -107,6 +107,8 @@
 		doc.is_return = 1
 		doc.return_against = source.name
 		doc.ignore_pricing_rule = 1
+		if doctype == "Sales Invoice":
+			doc.is_pos = 0
 		doc.run_method("calculate_taxes_and_totals")
 
 	def update_item(source_doc, target_doc, source_parent):