diff --git a/README.md b/README.md
index 397b82f..7cccf6e 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,7 @@ apt-get install opensc opensc-pkcs11  # For yubikey
  - Change grub sleep time in `/etc/default/grub` (and run `update-grub`)
  - update-alternatives --config x-terminal-emulator
  - Set `Option "Tapping" "on"` for touchpad in `/usr/share/X11/xorg.conf.d/40-libinput.conf`
+ - (May have to change button map, like `xinput set-button-map 12 1 2 2 4 5 6 7`, use `xev` from `x11-utils` to see button ids).
  - https://wiki.debian.org/TransparentEncryptionForHomeFolder
  - Storage=volatile dans /etc/systemd/journald.conf