diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 3dab054..71f2e12 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -1619,22 +1619,23 @@
 
 	for pos_payment_method in pos_profile.get('payments'):
 		pos_payment_method = pos_payment_method.as_dict()
-		
+
 		payment_mode = get_mode_of_payment_info(pos_payment_method.mode_of_payment, doc.company)
-		payment_mode[0].default = pos_payment_method.default
-		append_payment(payment_mode[0])
+		if payment_mode:
+			payment_mode[0].default = pos_payment_method.default
+			append_payment(payment_mode[0])
 
 def get_all_mode_of_payments(doc):
 	return frappe.db.sql("""
-		select mpa.default_account, mpa.parent, mp.type as type 
-		from `tabMode of Payment Account` mpa,`tabMode of Payment` mp 
+		select mpa.default_account, mpa.parent, mp.type as type
+		from `tabMode of Payment Account` mpa,`tabMode of Payment` mp
 		where mpa.parent = mp.name and mpa.company = %(company)s and mp.enabled = 1""",
 	{'company': doc.company}, as_dict=1)
 
 def get_mode_of_payment_info(mode_of_payment, company):
 	return frappe.db.sql("""
-		select mpa.default_account, mpa.parent, mp.type as type 
-		from `tabMode of Payment Account` mpa,`tabMode of Payment` mp 
+		select mpa.default_account, mpa.parent, mp.type as type
+		from `tabMode of Payment Account` mpa,`tabMode of Payment` mp
 		where mpa.parent = mp.name and mpa.company = %s and mp.enabled = 1 and mp.name = %s""",
 	(company, mode_of_payment), as_dict=1)