diff --git a/armsrc/appmain.c b/armsrc/appmain.c
index 61189c0e4..26119ab25 100644
--- a/armsrc/appmain.c
+++ b/armsrc/appmain.c
@@ -993,7 +993,7 @@ static void PacketReceived(PacketCommandNG *packet) {
             ReaderMifare(packet->oldarg[0], packet->oldarg[1], packet->oldarg[2]);
             break;
         case CMD_MIFARE_READBL:
-            MifareReadBlock(packet->oldarg[0], packet->oldarg[1], packet->oldarg[2], packet->data.asBytes);
+            MifareReadBlock(packet->oldarg[0], packet->oldarg[1], packet->data.asBytes);
             break;
         case CMD_MIFAREU_READBL:
             MifareUReadBlock(packet->oldarg[0], packet->oldarg[1], packet->data.asBytes);
@@ -1008,10 +1008,10 @@ static void PacketReceived(PacketCommandNG *packet) {
             MifareUSetPwd(packet->oldarg[0], packet->data.asBytes);
             break;
         case CMD_MIFARE_READSC:
-            MifareReadSector(packet->oldarg[0], packet->oldarg[1], packet->oldarg[2], packet->data.asBytes);
+            MifareReadSector(packet->oldarg[0], packet->oldarg[1], packet->data.asBytes);
             break;
         case CMD_MIFARE_WRITEBL:
-            MifareWriteBlock(packet->oldarg[0], packet->oldarg[1], packet->oldarg[2], packet->data.asBytes);
+            MifareWriteBlock(packet->oldarg[0], packet->oldarg[1], packet->data.asBytes);
             break;
         //case CMD_MIFAREU_WRITEBL_COMPAT:
         //MifareUWriteBlockCompat(packet->oldarg[0], packet->data.asBytes);
@@ -1037,7 +1037,7 @@ static void PacketReceived(PacketCommandNG *packet) {
             break;
         }
         case CMD_SIMULATE_MIFARE_CARD:
-            Mifare1ksim(packet->oldarg[0], packet->oldarg[1], packet->oldarg[2], packet->data.asBytes);
+            Mifare1ksim(packet->oldarg[0], packet->oldarg[1], packet->data.asBytes);
             break;
 
         // emulator
@@ -1051,10 +1051,10 @@ static void PacketReceived(PacketCommandNG *packet) {
             MifareEMemSet(packet->oldarg[0], packet->oldarg[1], packet->oldarg[2], packet->data.asBytes);
             break;
         case CMD_MIFARE_EML_MEMGET:
-            MifareEMemGet(packet->oldarg[0], packet->oldarg[1], packet->oldarg[2], packet->data.asBytes);
+            MifareEMemGet(packet->oldarg[0], packet->oldarg[1]);
             break;
         case CMD_MIFARE_EML_CARDLOAD:
-            MifareECardLoad(packet->oldarg[0], packet->oldarg[1], packet->oldarg[2], packet->data.asBytes);
+            MifareECardLoad(packet->oldarg[0], packet->oldarg[1]);
             break;
 
         // Work with "magic Chinese" card
diff --git a/armsrc/apps.h b/armsrc/apps.h
index 4f75935c8..f3bbbe2c8 100644
--- a/armsrc/apps.h
+++ b/armsrc/apps.h
@@ -142,12 +142,12 @@ void EPA_PACE_Collect_Nonce(PacketCommandNG *c);
 void EPA_PACE_Replay(PacketCommandNG *c);
 
 // mifarecmd.h
-void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain);
+void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain);
 void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain);
 void MifareUC_Auth(uint8_t arg0, uint8_t *keybytes);
 void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain);
-void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain);
-void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain);
+void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t *datain);
+void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain);
 //void MifareUWriteBlockCompat(uint8_t arg0,uint8_t *datain);
 void MifareUWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain);
 void MifareNested(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain);
@@ -158,8 +158,8 @@ void MifareChkKeys_fast(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *da
 void MifareSetDbgLvl(uint16_t arg0);
 void MifareEMemClr(void);
 void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain);
-void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain);
-void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain);
+void MifareEMemGet(uint32_t arg0, uint32_t arg1);
+void MifareECardLoad(uint32_t arg0, uint32_t arg1);
 void MifareCSetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain);  // Work with "magic Chinese" card
 void MifareCGetBlock(uint32_t arg0, uint32_t arg1, uint8_t *datain);
 void MifareCIdent();  // is "magic chinese" card?
diff --git a/armsrc/mifarecmd.c b/armsrc/mifarecmd.c
index 94d152693..2e4cb865b 100644
--- a/armsrc/mifarecmd.c
+++ b/armsrc/mifarecmd.c
@@ -38,7 +38,7 @@ static uint8_t dummy_answer = 0;
 // Select, Authenticate, Read a MIFARE tag.
 // read block
 //-----------------------------------------------------------------------------
-void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain) {
+void MifareReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain) {
     // params
     uint8_t blockNo = arg0;
     uint8_t keyType = arg1;
@@ -198,7 +198,7 @@ void MifareUReadBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain) {
 // Select, Authenticate, Read a MIFARE tag.
 // read sector (data = 4 x 16 bytes = 64 bytes, or 16 x 16 bytes = 256 bytes)
 //-----------------------------------------------------------------------------
-void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain) {
+void MifareReadSector(uint8_t arg0, uint8_t arg1, uint8_t *datain) {
     // params
     uint8_t sectorNo = arg0;
     uint8_t keyType = arg1;
@@ -363,7 +363,7 @@ void MifareUReadCard(uint8_t arg0, uint16_t arg1, uint8_t arg2, uint8_t *datain)
 // Select, Authenticate, Write a MIFARE tag.
 // read block
 //-----------------------------------------------------------------------------
-void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t arg2, uint8_t *datain) {
+void MifareWriteBlock(uint8_t arg0, uint8_t arg1, uint8_t *datain) {
     // params
     uint8_t blockNo = arg0;
     uint8_t keyType = arg1;
@@ -1636,7 +1636,7 @@ void MifareEMemSet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain)
     emlSetMem_xt(datain, arg0, arg1, arg2); // data, block num, blocks count, block byte width
 }
 
-void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain) {
+void MifareEMemGet(uint32_t arg0, uint32_t arg1) {
     FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
     uint8_t buf[PM3_CMD_DATA_SIZE] = {0x00};
     emlGetMem(buf, arg0, arg1); // data, block num, blocks count (max 4)
@@ -1650,7 +1650,7 @@ void MifareEMemGet(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain)
 // Load a card into the emulator memory
 //
 //-----------------------------------------------------------------------------
-void MifareECardLoad(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain) {
+void MifareECardLoad(uint32_t arg0, uint32_t arg1) {
     uint64_t ui64Key;
     uint32_t cuid = 0;
     uint8_t numSectors = arg0;
diff --git a/armsrc/mifaresim.c b/armsrc/mifaresim.c
index f25b72d51..501d93a8a 100644
--- a/armsrc/mifaresim.c
+++ b/armsrc/mifaresim.c
@@ -415,7 +415,7 @@ static bool MifareSimInit(uint16_t flags, uint8_t *datain, tag_response_info_t *
 *@param exitAfterNReads, exit simulation after n blocks have been read, 0 is infinite ...
 * (unless reader attack mode enabled then it runs util it gets enough nonces to recover all keys attmpted)
 */
-void Mifare1ksim(uint16_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *datain) {
+void Mifare1ksim(uint16_t flags, uint8_t exitAfterNReads, uint8_t *datain) {
     tag_response_info_t *responses;
     uint8_t	cardSTATE = MFEMUL_NOFIELD;
     uint8_t uid_len = 0; // 4,7, 10
diff --git a/armsrc/mifaresim.h b/armsrc/mifaresim.h
index 7f92815d5..2dc9650cc 100644
--- a/armsrc/mifaresim.h
+++ b/armsrc/mifaresim.h
@@ -19,7 +19,7 @@
 # define CheckCrc14A(data, len)	check_crc(CRC_14443_A, (data), (len))
 #endif
 
-void Mifare1ksim(uint16_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *datain);
+void Mifare1ksim(uint16_t flags, uint8_t exitAfterNReads, uint8_t *datain);
 
 #define AC_DATA_READ             0
 #define AC_DATA_WRITE            1