diff --git a/.travis.yml b/.travis.yml
index ee75029e..94e1ac33 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -64,6 +64,5 @@ matrix:
         - JUPYTERHUB_TEST_DB_URL=postgresql://postgres@127.0.0.1/jupyterhub
     - python: 3.7
       dist: xenial
-      env: JUPYTERHUB_TEST_SUBDOMAIN_HOST=http://localhost.jovyan.org:8000
   allow_failures:
     - python: nightly