diff --git a/README.md b/README.md
index bc8f626..8b22d4f 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,10 @@ clone then:
 
 * `make install`
 
+Edit the created `./src/config.pug` file to :
+ - update the `client_id` you generated on the server / OIDC provider
+ - update the `sdn` / Server Domain Name to match yours
+
 ## Build
 
 A first build is mandatory for compiling the static assets.