diff --git a/installation.rst b/installation.rst
index 269093b..f4d12a0 100644
--- a/installation.rst
+++ b/installation.rst
@@ -74,7 +74,7 @@ Running Authentic 2 behind an Apache2 reverse proxy
 Authentic 2 runs as an `uWSGI daemon
 <https://uwsgi-docs.readthedocs.io/en/latest/>`__ and can be
 configured as a backend for an Apache2 reverse proxy by adding
-the following example to `/etc/apache2/sites-enabled/authentic2.conf`::
+the following example to `/etc/apache2/sites-available/authentic2.conf`::
 
   <VirtualHost *:80>
         ServerName idp.example.com
@@ -112,6 +112,14 @@ the following example to `/etc/apache2/sites-enabled/authentic2.conf`::
         CustomLog ${APACHE_LOG_DIR}/idp.example.com-access.log combined
   </VirtualHost>
 
+And the enable it with::
+
+    $ a2ensite authentic2
+
+It also requires modules that can be enabled as follows::
+
+    $ a2enmod proxy_http headers ssl
+
 Quickstarts
 -----------