diff --git a/readme/development.md b/readme/development.md
index 721bcfe8..ccf21dae 100644
--- a/readme/development.md
+++ b/readme/development.md
@@ -29,6 +29,7 @@ requests.
 - [ ] automatically load presets when devices get plugged in after login (udev)
 - [ ] mapping a combined button press to a key
 - [ ] configure locale for preset to provide a different set of possible keys
+- [ ] user-friendly way to map btn_left
 
 ## Tests