diff --git a/firmware/cfg.toml b/firmware/cfg.toml
index 6c0e658..0e752df 100644
--- a/firmware/cfg.toml
+++ b/firmware/cfg.toml
@@ -1,2 +1,3 @@
+# Wifi settings tuning, see https://github.com/esp-rs/esp-hal/blob/main/esp-wifi/tuning.md
 [esp-wifi]
 country_code = "DE"