diff --git a/README.md b/README.md
index 51391db..966e3c7 100644
--- a/README.md
+++ b/README.md
@@ -8,3 +8,13 @@ surf-display is meant to be run as a session manager (run it from `~/.xsession`)
 
 1. `git clone https://tildegit.org/solene/surf-display-openbsd`
 2. edit `~/.xsession` and add `~/surf-display-openbsd/bin/surf-display`
+
+# Configuration
+
+Create `/etc/surf-display` like in this example:
+
+```
+DEFAULT_WWW_URI=https://www.openbsd.org/
+```
+
+More configuration are available and explained in the documentation generated in the Makefile. They are currently not really up to date with this fork but should work.