diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c
index 31231be37..893db4763 100644
--- a/armsrc/mifareutil.c
+++ b/armsrc/mifareutil.c
@@ -296,7 +296,7 @@ int mifare_ultra_auth(uint8_t *keybytes) {
     memcpy(enc_random_b, resp + 1, 8);
 
     // decrypt nonce.
-    tdes_nxp_receive((void *)enc_random_b, (void *)random_b, sizeof(random_b), (const void *)key, IV,2);
+    tdes_nxp_receive((void *)enc_random_b, (void *)random_b, sizeof(random_b), (const void *)key, IV, 2);
     rol(random_b, 8);
     memcpy(rnd_ab, random_a, 8);
     memcpy(rnd_ab + 8, random_b, 8);
@@ -316,7 +316,7 @@ int mifare_ultra_auth(uint8_t *keybytes) {
     }
 
     // encrypt    out, in, length, key, iv
-    tdes_nxp_send(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b,2);
+    tdes_nxp_send(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b, 2);
 
     len = mifare_sendcmd(MIFARE_ULC_AUTH_2, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
     if (len != 11) {
@@ -329,7 +329,7 @@ int mifare_ultra_auth(uint8_t *keybytes) {
     memcpy(enc_resp, resp + 1, 8);
 
     // decrypt    out, in, length, key, iv
-    tdes_nxp_receive(enc_resp, resp_random_a, 8, key, enc_random_b,2);
+    tdes_nxp_receive(enc_resp, resp_random_a, 8, key, enc_random_b, 2);
     if (memcmp(resp_random_a, random_a, 8) != 0) {
         if (DBGLEVEL >= DBG_ERROR) Dbprintf("failed authentication");
         return 0;