diff --git a/sys/opencrypto/cryptodev.h b/sys/opencrypto/cryptodev.h
index 8f8317b03cd1..df74fa58ca4a 100644
--- a/sys/opencrypto/cryptodev.h
+++ b/sys/opencrypto/cryptodev.h
@@ -97,7 +97,7 @@
 #define CAST128_BLOCK_LEN	8
 #define RIJNDAEL128_BLOCK_LEN	16
 #define AES_BLOCK_LEN		RIJNDAEL128_BLOCK_LEN
-#define EALG_MAX_BLOCK_LEN	16 /* Keep this updated */
+#define EALG_MAX_BLOCK_LEN	AES_BLOCK_LEN /* Keep this updated */
 
 #define	CRYPTO_ALGORITHM_MIN	1
 #define CRYPTO_DES_CBC		1
@@ -153,8 +153,6 @@ struct crypt_op {
 	caddr_t		iv;
 };
 
-#define CRYPTO_MAX_MAC_LEN	20
-
 /* bignum parameter, in packed bytes, ... */
 struct crparam {
 	caddr_t		crp_p;