diff --git a/client/src/cmdhflist.c b/client/src/cmdhflist.c
index 360ed50b1..6e292ad6f 100644
--- a/client/src/cmdhflist.c
+++ b/client/src/cmdhflist.c
@@ -311,7 +311,7 @@ int applyIso14443a(char *exp, size_t size, uint8_t *cmd, uint8_t cmdsize) {
         case MIFARE_ULNANO_WRITESIG:
             snprintf(exp, size, "WRITE SIG");
             break;
-        case MIFARE_ULNANO_LOCKSIF: {
+        case MIFARE_ULNANO_LOCKSIG: {
             if (cmd[1] == 0)
                 snprintf(exp, size, "UNLOCK SIG");
             else if (cmd[1] == 2)
diff --git a/include/protocols.h b/include/protocols.h
index dafce0024..f5848eca7 100644
--- a/include/protocols.h
+++ b/include/protocols.h
@@ -188,7 +188,7 @@ ISO 7816-4 Basic interindustry commands. For command APDU's.
 
 // New Mifare UL Nano commands.  Ref:: (https://www.nxp.com/docs/en/data-sheet/MF0UN_H_00.pdf)
 #define MIFARE_ULNANO_WRITESIG      0xA9
-#define MIFARE_ULNANO_LOCKSIF       0xAC
+#define MIFARE_ULNANO_LOCKSIG       0xAC
 
 // mifare 4bit card answers
 #define CARD_ACK      0x0A  // 1010 - ACK