diff --git a/README.md b/README.md
index 72418a0..f498aae 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ fmt.Println(invoices)
 Here you will find an example how to create a new invoice in sevDesk.
 
 ```go
-invoice, err := sevdesk.NewInvoice(sevdesk.Invoice{"323456", "21.11.2020", "100", "RE", "234353", "token"})
+invoice, err := sevdesk.NewInvoice(sevdesk.Invoice{"contactID", "address", "invoiceDate", "status", "invoiceType", "contactPerson", "subject", "headText", "footText", "token"})
 if err != nil {
     fmt.Println("Error: ", err)
 }