diff --git a/lib/asn1/k5.asn1 b/lib/asn1/k5.asn1
index 3a15053c1..23e667fdb 100644
--- a/lib/asn1/k5.asn1
+++ b/lib/asn1/k5.asn1
@@ -11,7 +11,6 @@ NAME-TYPE ::= INTEGER {
 	KRB5_NT_SRV_XHST(4),	-- Service with host as remaining components
 	KRB5_NT_UID(5),		-- Unique ID
 	KRB5_NT_X500_PRINCIPAL(6), -- PKINIT
-	KRB5_NT_SMTP_NAME(7),	-- Name in form of SMTP email name
 	KRB5_NT_ENTERPRISE(10)	-- May be mapped to principal name
 }