1 files changed, 4 insertions, 0 deletions

diff --git a/auth2.c b/auth2.c
index cfe63cdf1..34a5f482d 100644
--- a/auth2.c
+++ b/auth2.c
@@ -93,8 +93,12 @@ void
 do_authentication2()
 {
         /* turn off skey/kerberos, not supported by SSH2 */
+#ifdef SKEY
         options.skey_authentication = 0;
+#endif
+#ifdef KRB4
         options.kerberos_authentication = 0;
+#endif
 
         dispatch_init(&protocol_error);
         dispatch_set(SSH2_MSG_SERVICE_REQUEST, &input_service_request);