diff --git a/TODO.txt b/TODO.txt
index 0810866..b97a3a0 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -1,2 +1,3 @@
 
 TODO:
+- use register_lbm with run_at_every_load instead of register_abm ( https://forum.minetest.net/viewtopic.php?p=325519#p325519 )