diff --git a/client/src/cmdhfmfu.c b/client/src/cmdhfmfu.c
index 4d5106437..ac9d44802 100644
--- a/client/src/cmdhfmfu.c
+++ b/client/src/cmdhfmfu.c
@@ -992,7 +992,6 @@ uint32_t GetHF14AMfU_Type(void) {
                 else if (memcmp(version, "\x00\x04\x04\x05\x02\x01\x15", 7) == 0) { tagtype = NTAG_I2C_2K; break; }
                 else if (memcmp(version, "\x00\x04\x04\x05\x02\x02\x13", 7) == 0) { tagtype = NTAG_I2C_1K_PLUS; break; }
                 else if (memcmp(version, "\x00\x04\x04\x05\x02\x02\x15", 7) == 0) { tagtype = NTAG_I2C_2K_PLUS; break; }
-                else if (memcmp(version, "\x00\x34\x21\x01\x01\x00\x0E", 7) == 0) { tagtype = UL; break; }
                 else if (version[2] == 0x04) { tagtype = NTAG; break; }
                 else if (version[2] == 0x03) { tagtype = UL_EV1; }
                 break;
@@ -2064,7 +2063,16 @@ static int CmdHF14AMfURestore(const char *Cmd) {
     bool verbose = arg_get_lit(ctx, 7);
     CLIParserFree(ctx);
 
+
     bool has_key = false;
+    if (ak_len > 0) {
+        if (ak_len != 4 || ak_len != 16) {
+            PrintAndLogEx(ERR, "Wrong key length. expected 4 or 16, got %d", ak_len);
+            return PM3_EINVARG;
+        } else {
+            has_key = true;
+        }
+    }
 
     uint8_t *dump = NULL;
     size_t bytes_read = 0;