diff --git a/src/librustc_driver/test.rs b/src/librustc_driver/test.rs
index 97577008377a..9efd8844977f 100644
--- a/src/librustc_driver/test.rs
+++ b/src/librustc_driver/test.rs
@@ -455,8 +455,7 @@ fn sub_free_bound_false_infer() {
     //! does NOT hold for any instantiation of `_#1`.
 
     test_env(EMPTY_SOURCE_STR, errors(&[]), |env| {
-        let t_infer1 = env.infcx.next_ty_var(ty::UniverseIndex::ROOT,
-                                             TypeVariableOrigin::MiscVariable(DUMMY_SP));
+        let t_infer1 = env.infcx.next_ty_var(TypeVariableOrigin::MiscVariable(DUMMY_SP));
         let t_rptr_bound1 = env.t_rptr_late_bound(1);
         env.check_not_sub(env.t_fn(&[t_infer1], env.tcx().types.isize),
                           env.t_fn(&[t_rptr_bound1], env.tcx().types.isize));