1 files changed, 9 insertions, 0 deletions

diff --git a/docs/en/user/installation.rst b/docs/en/user/installation.rst
index bc35a02b..182ed418 100644
--- a/docs/en/user/installation.rst
+++ b/docs/en/user/installation.rst
@@ -62,6 +62,11 @@ To start php's build-in server and test if everything did install correctly, you
 
 And access wallabag at http://yourserverip:8000
 
+.. note::
+
+    To define parameters with environment variables, you have to set these variables with ``SYMFONY__`` prefix. For example, ``SYMFONY__DATABASE_DRIVER``. You can have a look to the  `Symfony documentation
+<http://symfony.com/doc/current/cookbook/configuration/external_parameters.html>`__.
+
 Installing on Apache
 --------------------
 
@@ -146,3 +151,7 @@ Assuming you install wallabag in the /var/www/wallabag folder, here's the recipe
     }
 
 After reloading or restarting nginx, you should now be able to access wallabag at http://domain.tld.
+
+.. note::
+
+    When you want to import large file into wallabag, you need to add this line in your nginx configuration ``client_max_body_size XM; # allows file uploads up to X megabytes``.