diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 4f80b78..95c5dd5 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -206,9 +206,9 @@
 			total_amount_in_payments = 0
 			for payment in self.payments:
 				total_amount_in_payments += payment.amount
-
-			if total_amount_in_payments < self.rounded_total:
-				frappe.throw(_("Total payments amount can't be greater than {}".format(-self.rounded_total)))
+			invoice_total = self.rounded_total or self.grand_total
+			if total_amount_in_payments < invoice_total:
+				frappe.throw(_("Total payments amount can't be greater than {}".format(-invoice_total)))
 
 	def validate_pos_paid_amount(self):
 		if len(self.payments) == 0 and self.is_pos:
@@ -1510,4 +1510,4 @@
 		"outstanding_amount": invoice.outstanding_amount
 	})
 
-	return invoice_discounting
\ No newline at end of file
+	return invoice_discounting