diff --git a/src/mfoc.c b/src/mfoc.c
index e9e19c0..e71c3c1 100644
--- a/src/mfoc.c
+++ b/src/mfoc.c
@@ -82,8 +82,6 @@ int main(int argc, char *const argv[])
   // Array with default Mifare Classic keys
   uint8_t defaultKeys[][6] = {
     {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}, // Default key (first key used by program if no user defined key)
-    {0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5}, // NFCForum MAD key
-    {0xd3, 0xf7, 0xd3, 0xf7, 0xd3, 0xf7}, // NFCForum content key
     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // Blank key
     {0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5},
     {0x4d, 0x3a, 0x99, 0xc3, 0x51, 0xdd},
@@ -251,7 +249,7 @@ int main(int argc, char *const argv[])
     t.sectors[s].foundKeyA = t.sectors[s].foundKeyB = false;
   }
 
-  print_nfc_target(t.nt, true);
+  print_nfc_target(&t.nt, true);
 
   fprintf(stdout, "\nTry to authenticate to all sectors with default keys...\n");
   fprintf(stdout, "Symbols: '.' no key found, '/' A key found, '\\' B key found, 'x' both keys found\n");
diff --git a/src/nfc-utils.c b/src/nfc-utils.c
index deb51e7..5c0a264 100644
--- a/src/nfc-utils.c
+++ b/src/nfc-utils.c
@@ -1,9 +1,13 @@
 /*-
- * Public platform independent Near Field Communication (NFC) library examples
+ * Free/Libre Near Field Communication (NFC) library
  *
- * Copyright (C) 2009 Roel Verdult
- * Copyright (C) 2010, 2011 Romain Tartière
- * Copyright (C) 2009, 2010, 2011, 2012 Romuald Conty
+ * Libnfc historical contributors:
+ * Copyright (C) 2009      Roel Verdult
+ * Copyright (C) 2009-2013 Romuald Conty
+ * Copyright (C) 2010-2012 Romain Tartière
+ * Copyright (C) 2010-2013 Philippe Teuwen
+ * Copyright (C) 2012-2013 Ludovic Rousseau
+ * Additional contributors of this file:
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -115,10 +119,10 @@ print_hex_par(const uint8_t *pbtData, const size_t szBits, const uint8_t *pbtDat
 }
 
 void
-print_nfc_target(const nfc_target nt, bool verbose)
+print_nfc_target(const nfc_target *pnt, bool verbose)
 {
   char *s;
-  str_nfc_target(&s, nt, verbose);
+  str_nfc_target(&s, pnt, verbose);
   printf("%s", s);
-  free(s);
+  nfc_free(s);
 }
diff --git a/src/nfc-utils.h b/src/nfc-utils.h
index c92fbc2..8c52d4c 100644
--- a/src/nfc-utils.h
+++ b/src/nfc-utils.h
@@ -1,9 +1,13 @@
 /*-
- * Public platform independent Near Field Communication (NFC) library examples
+ * Free/Libre Near Field Communication (NFC) library
  *
- * Copyright (C) 2009 Roel Verdult
- * Copyright (C) 2010 Romain Tartière
- * Copyright (C) 2010, 2011, 2012 Romuald Conty
+ * Libnfc historical contributors:
+ * Copyright (C) 2009      Roel Verdult
+ * Copyright (C) 2009-2013 Romuald Conty
+ * Copyright (C) 2010-2012 Romain Tartière
+ * Copyright (C) 2010-2013 Philippe Teuwen
+ * Copyright (C) 2012-2013 Ludovic Rousseau
+ * Additional contributors of this file:
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -94,6 +98,6 @@ void    print_hex(const uint8_t *pbtData, const size_t szLen);
 void    print_hex_bits(const uint8_t *pbtData, const size_t szBits);
 void    print_hex_par(const uint8_t *pbtData, const size_t szBits, const uint8_t *pbtDataPar);
 
-void    print_nfc_target(const nfc_target nt, bool verbose);
+void    print_nfc_target(const nfc_target *pnt, bool verbose);
 
 #endif