diff --git a/client/cmdhflist.h b/client/cmdhflist.h
index a7edb51f6..105328b9b 100644
--- a/client/cmdhflist.h
+++ b/client/cmdhflist.h
@@ -53,7 +53,7 @@ typedef struct {
 } TAuthData;
 extern void ClearAuthData();
 
-extern uint8_t iso14443A_CRC_check(bool isResponse, uint8_t *data, uint8_t len);
+extern uint8_t iso14443A_CRC_check(bool isResponse, uint8_t *d, uint8_t n);
 extern uint8_t iso14443B_CRC_check(uint8_t *d, uint8_t n);
 extern uint8_t mifare_CRC_check(bool isResponse, uint8_t *data, uint8_t len);
 extern uint8_t iso15693_CRC_check(uint8_t *d, uint8_t n);