diff --git a/dask_kubernetes/classic/tests/test_async.py b/dask_kubernetes/classic/tests/test_async.py
index 33fb70219..5bcc486c2 100644
--- a/dask_kubernetes/classic/tests/test_async.py
+++ b/dask_kubernetes/classic/tests/test_async.py
@@ -142,7 +142,7 @@ async def test_diagnostics_link_env_variable(k8s_cluster, pod_spec, user_env):
     pytest.importorskip("bokeh")
     with dask.config.set({"distributed.dashboard.link": "foo-{USER}-{port}"}):
         async with KubeCluster(pod_spec, asynchronous=True) as cluster:
-            port = cluster.scheduler_info["services"]["dashboard"]
+            port = cluster.forwarded_dashboard_port
 
             assert (
                 "foo-" + getpass.getuser() + "-" + str(port) in cluster.dashboard_link