diff --git a/doc/0.getting_started.md b/doc/0.getting_started.md
index 7d0e8ff..abf9e8e 100644
--- a/doc/0.getting_started.md
+++ b/doc/0.getting_started.md
@@ -77,8 +77,11 @@ List of configuration options:
   `data_directory`.
 * `navitia_api_key` is an API token for [Navitia](https://www.navitia.io/)
   which is required to compute travel times.
-* `modules_path` is the path to the Weboob modules. It can be `None` if you
-  want Weboob to use the locally pip-installed modules (default value).
+* `modules_path` is the path to the Weboob modules. It can be `null` if you
+  want Weboob to use the locally installed [Weboob
+  modules](https://git.weboob.org/weboob/modules), which you should install
+  yourself. This is the default value. If it is a string, it should be an
+  absolute path to the folder containing Weboob modules.
 * `port` is the port on which the development webserver should be
   listening (default to `8080`).
 * `host` is the host on which the development webserver should be listening