diff --git a/armsrc/mifarecmd.c b/armsrc/mifarecmd.c
index 43b06593b..52e08f83e 100644
--- a/armsrc/mifarecmd.c
+++ b/armsrc/mifarecmd.c
@@ -1945,6 +1945,7 @@ void MifareCIdent() {
     uint8_t *buf = BigBuf_malloc(PM3_CMD_DATA_SIZE);
     uint8_t *uid = BigBuf_malloc(10);
     uint32_t cuid = 0;
+    uint8_t data[1] = {0x00};
 
     iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
@@ -1982,7 +1983,9 @@ TEST2:
     };
 
 OUT:
-    reply_old(CMD_ACK, isGen, 0, 0, 0, 0);
+	
+    data[0] = isGen;
+    reply_ng(CMD_MIFARE_CIDENT, PM3_SUCCESS, data, sizeof(data));
     // turns off
     OnSuccessMagic();
     BigBuf_free();
diff --git a/client/mifare/mifarehost.c b/client/mifare/mifarehost.c
index d1ae6a595..078eb467a 100644
--- a/client/mifare/mifarehost.c
+++ b/client/mifare/mifarehost.c
@@ -974,8 +974,10 @@ void detect_classic_magic(void) {
     PacketResponseNG resp;
     clearCommandBuffer();
     SendCommandNG(CMD_MIFARE_CIDENT, NULL, 0);
-    if (WaitForResponseTimeout(CMD_ACK, &resp, 1500))
-        isGeneration = resp.oldarg[0] & 0xff;
+    if (WaitForResponseTimeout(CMD_MIFARE_CIDENT, &resp, 1500)) {
+        if ( resp.status == PM3_SUCCESS )
+            isGeneration = resp.data.asBytes[0];
+    }
 
     switch (isGeneration) {
         case 1: