diff --git a/README.md b/README.md
index 85749cd..a7ac07a 100644
--- a/README.md
+++ b/README.md
@@ -70,7 +70,7 @@ To build, just run make:
         
   - authentication using signed UID as NDEF message on Desfire:
   
-        ./brmdoor_adduser.py -c brmdoor.config -a ndef 04631982cc2280 SomeUserName"
+        ./brmdoor_adduser.py -c brmdoor_nfc.config -a ndef 04631982cc2280 SomeUserName
   
   - you need to generate Ed25519 keypair, store the private key somewhere safe and put the public in config file
   
diff --git a/write_signed_ndef_on_desfire.py b/write_signed_ndef_on_desfire.py
index 1f11752..6491aba 100755
--- a/write_signed_ndef_on_desfire.py
+++ b/write_signed_ndef_on_desfire.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2
 
 import sys
 import os