diff --git a/common/wiegand.h b/common/wiegand.h
index d856e3993..1db50607c 100644
--- a/common/wiegand.h
+++ b/common/wiegand.h
@@ -12,8 +12,8 @@
 #include "common.h"
 #include "util.h"
 
-uint8_t getParity(uint8_t *bits, uint8_t length, uint8_t type);
-uint8_t checkParity(uint32_t bits, uint8_t bitlen, uint8_t type);
+uint8_t getParity(uint8_t *bits, uint8_t len, uint8_t type);
+uint8_t checkParity(uint32_t bits, uint8_t len, uint8_t type);
 
 void num_to_wiegand_bytes(uint64_t oem, uint64_t fc, uint64_t cn, uint8_t *dest, uint8_t formatlen);
 void num_to_wiegand_bits(uint64_t oem, uint64_t fc, uint64_t cn, uint8_t *dest, uint8_t formatlen);