diff --git a/doc/source/install-on-macosx.rst b/doc/source/install-on-macosx.rst
index 712521680..04148850b 100644
--- a/doc/source/install-on-macosx.rst
+++ b/doc/source/install-on-macosx.rst
@@ -47,30 +47,3 @@ that you've cloned the git repository.
 .. code-block:: bash
 
   python test/runtest.py
-
-
-Optional - web UI
------------------
-
-Ray's web UI requires **Python 3**. To enable the web UI to work, install these
-Python packages.
-
-.. code-block:: bash
-
-  pip install aioredis asyncio websockets
-
-Then install `Polymer`_, which also requires `Node.js`_ and `Bower`_.
-
-.. _`Polymer`: https://www.polymer-project.org/1.0/docs/tools/polymer-cli
-.. _`Node.js`: https://nodejs.org/en/download/
-.. _`Bower`: http://bower.io/#install-bower
-
-Once you've installed Polymer, run the following.
-
-.. code-block:: bash
-
-  cd ray/webui
-  bower install
-
-Then while Ray is running, you should be able to view the web UI at
-``http://localhost:8080``.
diff --git a/doc/source/install-on-ubuntu.rst b/doc/source/install-on-ubuntu.rst
index ae90ad241..3d1e63d0e 100644
--- a/doc/source/install-on-ubuntu.rst
+++ b/doc/source/install-on-ubuntu.rst
@@ -52,30 +52,3 @@ that you've cloned the git repository.
 .. code-block:: bash
 
   python test/runtest.py
-
-
-Optional - web UI
------------------
-
-Ray's web UI requires **Python 3**. To enable the web UI to work, install these
-Python packages.
-
-.. code-block:: bash
-
-  pip install aioredis asyncio websockets
-
-Then install `Polymer`_, which also requires `Node.js`_ and `Bower`_.
-
-.. _`Polymer`: https://www.polymer-project.org/1.0/docs/tools/polymer-cli
-.. _`Node.js`: https://nodejs.org/en/download/
-.. _`Bower`: http://bower.io/#install-bower
-
-Once you've installed Polymer, run the following.
-
-.. code-block:: bash
-
-  cd ray/webui
-  bower install
-
-Then while Ray is running, you should be able to view the web UI at
-``http://localhost:8080``.
diff --git a/doc/source/using-ray-on-a-cluster.md b/doc/source/using-ray-on-a-cluster.md
index 1d7df96f9..6c401f725 100644
--- a/doc/source/using-ray-on-a-cluster.md
+++ b/doc/source/using-ray-on-a-cluster.md
@@ -70,29 +70,3 @@ ray.get([f.remote(f.remote(f.remote(0))) for _ in range(1000)])
 
 When you want to stop the Ray processes, run `./ray/scripts/stop_ray.sh`
 on each node.
-
-### Using the Web UI on a Cluster
-
-If you followed the instructions for setting up the web UI, then
-`./ray/scripts/start_ray.sh --head` will attempt to start a Python 3 webserver
-on the head node. In order to view the web UI from a machine that is not part of
-the cluster (like your laptop), you can use SSH port forwarding. The web UI
-requires ports 8080 and 8888, which you can forward using a command like the
-following.
-
-```
-ssh -L 8080:localhost:8080 -L 8888:localhost:8888 ubuntu@<head-node-public-ip>
-```
-
-Then you can view the web UI on your laptop by navigating to
-`http://localhost:8080` in a browser.
-
-#### Troubleshooting the Web UI
-
-Note that to use the web UI, additional setup is required. In particular, you
-must be using Python 3 or you must at least have `python3` on your path.
-
-If the web UI doesn't work, it's possible that the web UI processes were never
-started (check `ps aux | grep polymer` and `ps aux | grep ray_ui.py`). If they
-were started, see if you can fetch the web UI from within the head node (try
-`wget http://localhost:8080` on the head node).
diff --git a/python/ray/services.py b/python/ray/services.py
index dac0a85f3..0ac9e6935 100644
--- a/python/ray/services.py
+++ b/python/ray/services.py
@@ -1054,7 +1054,7 @@ def start_ray_head(address_info=None,
       include_global_scheduler=True,
       include_log_monitor=True,
       include_redis=True,
-      include_webui=True,
+      include_webui=False,
       start_workers_from_local_scheduler=start_workers_from_local_scheduler,
       num_cpus=num_cpus,
       num_gpus=num_gpus)