diff --git a/appl/telnet/libtelnet/auth.c b/appl/telnet/libtelnet/auth.c
index 78b5bd770..1c01245d1 100644
--- a/appl/telnet/libtelnet/auth.c
+++ b/appl/telnet/libtelnet/auth.c
@@ -81,15 +81,6 @@ RCSID("$Id$");
 
 #define	typemask(x)		(1<<((x)-1))
 
-#ifdef	KRB4_ENCPWD
-extern krb4encpwd_init();
-extern krb4encpwd_send();
-extern krb4encpwd_is();
-extern krb4encpwd_reply();
-extern krb4encpwd_status();
-extern krb4encpwd_printsub();
-#endif
-
 #ifdef	RSA_ENCPWD
 extern rsaencpwd_init();
 extern rsaencpwd_send();
@@ -166,31 +157,6 @@ Authenticator authenticators[] = {
       kerberos5_status,
       kerberos5_printsub },
 #endif
-#ifdef	KRB4
-    { AUTHTYPE_KERBEROS_V4, AUTH_WHO_CLIENT|AUTH_HOW_MUTUAL,
-      kerberos4_init,
-      kerberos4_send_mutual,
-      kerberos4_is,
-      kerberos4_reply,
-      kerberos4_status,
-      kerberos4_printsub },
-    { AUTHTYPE_KERBEROS_V4, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY,
-      kerberos4_init,
-      kerberos4_send_oneway,
-      kerberos4_is,
-      kerberos4_reply,
-      kerberos4_status,
-      kerberos4_printsub },
-#endif
-#ifdef	KRB4_ENCPWD
-    { AUTHTYPE_KRB4_ENCPWD, AUTH_WHO_CLIENT|AUTH_HOW_MUTUAL,
-      krb4encpwd_init,
-      krb4encpwd_send,
-      krb4encpwd_is,
-      krb4encpwd_reply,
-      krb4encpwd_status,
-      krb4encpwd_printsub },
-#endif
 #ifdef	RSA_ENCPWD
     { AUTHTYPE_RSA_ENCPWD, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY,
       rsaencpwd_init,