diff --git a/appl/test/tcp_server.c b/appl/test/tcp_server.c
index 939b4dfca..f74399425 100644
--- a/appl/test/tcp_server.c
+++ b/appl/test/tcp_server.c
@@ -78,7 +78,7 @@ proto (int sock, const char *service)
 			    VERSION,
 			    server,
 			    0,
-			    NULL,
+			    keytab,
 			    &ticket);
     if (status)
 	krb5_err (context, 1, status, "krb5_recvauth");