diff --git a/lib/asn1/k5.asn1 b/lib/asn1/k5.asn1
index ef10d1efd..c10d3f337 100644
--- a/lib/asn1/k5.asn1
+++ b/lib/asn1/k5.asn1
@@ -114,10 +114,11 @@ ENCTYPE ::= INTEGER {
 	ETYPE_DES_PCBC_NONE(-0x1003),
 	ETYPE_DIGEST_MD5_NONE(-0x1004),		-- private use, lukeh@padl.com
 	ETYPE_CRAM_MD5_NONE(-0x1005),		-- private use, lukeh@padl.com
-	ETYPE_RC2_CBC_NONE(-0x1005),
-	ETYPE_AES128_CBC_NONE(-0x1006),
-	ETYPE_AES192_CBC_NONE(-0x1007),
-	ETYPE_AES256_CBC_NONE(-0x1008)
+	ETYPE_RC2_CBC_NONE(-0x1006),
+	ETYPE_AES128_CBC_NONE(-0x1007),
+	ETYPE_AES192_CBC_NONE(-0x1008),
+	ETYPE_AES256_CBC_NONE(-0x1009),
+	ETYPE_DES3_CBC_NONE_CMS(-0x100a)
 }
 
 -- this is sugar to make something ASN1 does not have: unsigned