diff --git a/lib/krb5/krb5.h b/lib/krb5/krb5.h
index f6781470d..13dafacf2 100644
--- a/lib/krb5/krb5.h
+++ b/lib/krb5/krb5.h
@@ -676,7 +676,7 @@ typedef struct _krb5_get_init_creds_opt krb5_get_init_creds_opt;
 #define KRB5_GET_INIT_CREDS_OPT_ETYPE_LIST	0x0010
 #define KRB5_GET_INIT_CREDS_OPT_ADDRESS_LIST	0x0020
 #define KRB5_GET_INIT_CREDS_OPT_PREAUTH_LIST	0x0040
-#define KRB5_GET_INIT_CREDS_OPT_SALT		0x0080
+#define KRB5_GET_INIT_CREDS_OPT_SALT		0x0080 /* no supported */
 #define KRB5_GET_INIT_CREDS_OPT_ANONYMOUS	0x0100
 #define KRB5_GET_INIT_CREDS_OPT_DISABLE_TRANSITED_CHECK	0x0200