diff --git a/iana/etypeID/constants.go b/iana/etypeID/constants.go
index 65cd72fb..46a0d748 100644
--- a/iana/etypeID/constants.go
+++ b/iana/etypeID/constants.go
@@ -57,8 +57,8 @@ var ETypesByName = map[string]int32{
 	"aes128-cts":                   AES128_CTS_HMAC_SHA1_96,
 	"aes128-sha1":                  AES128_CTS_HMAC_SHA1_96,
 	"aes256-cts-hmac-sha1-96":      AES256_CTS_HMAC_SHA1_96,
-	"aes256-cts":                   AES128_CTS_HMAC_SHA1_96,
-	"aes256-sha1":                  AES128_CTS_HMAC_SHA1_96,
+	"aes256-cts":                   AES256_CTS_HMAC_SHA1_96,
+	"aes256-sha1":                  AES256_CTS_HMAC_SHA1_96,
 	"aes128-cts-hmac-sha256-128":   AES128_CTS_HMAC_SHA256_128,
 	"aes128-sha2":                  AES128_CTS_HMAC_SHA256_128,
 	"aes256-cts-hmac-sha384-192":   AES256_CTS_HMAC_SHA384_192,