diff --git a/docs/using.rst b/docs/using.rst
index 995a4c83a..1e94ab21e 100644
--- a/docs/using.rst
+++ b/docs/using.rst
@@ -37,11 +37,11 @@ dependencies and provides automated updates during the beta program)
 
 .. warning:: Please do **not** use ``python setup.py install`` or
    ``python pip install .``. Please do **not** attempt the
-   installation commands as superuser/root and/or without Virtualenv_,
-   e.g. ``sudo python setup.py install``, ``sudo pip install``, ``sudo
-   ./venv/bin/...``. These modes of operation might corrupt your
-   operating system and are **not supported** by the Let's Encrypt
-   team!
+   installation commands as superuser/root and/or without virtual
+   environment, e.g. ``sudo python setup.py install``, ``sudo pip
+   install``, ``sudo ./venv/bin/...``. These modes of operation might
+   corrupt your operating system and are **not supported** by the
+   Let's Encrypt team!
 
 The ``letsencrypt`` commandline tool has a builtin help: