diff --git a/TODO b/TODO
index e8ae3bd..ce8f345 100644
--- a/TODO
+++ b/TODO
@@ -26,6 +26,7 @@
 [F] kline/xline/resv sync
 [F] make an ability of using bandb instead of .conf files as bans storage
 [F] drop non-TS6 (legacy protocol) support
+[F] Doxygen code documentation
 [F] module engine rework
   [F] more beautiful way of adding new channel modes by module
   [F] make nick/user/host validation functions/match tables able to work in separated modules,