diff --git a/appl/kx/kx.c b/appl/kx/kx.c
index 2d5d3ab76..5eaf2bd66 100644
--- a/appl/kx/kx.c
+++ b/appl/kx/kx.c
@@ -689,8 +689,10 @@ main(int argc, char **argv)
     if (optind != argc - 1)
 	usage (1);
 
+#ifdef KRB5
     if (forwardable_flag)
 	forward_flag = 1;
+#endif
 
     host = argv[optind];