diff --git a/legacy/elementary/TODO b/legacy/elementary/TODO
index 04daaadab0..c75f973a17 100644
--- a/legacy/elementary/TODO
+++ b/legacy/elementary/TODO
@@ -14,3 +14,4 @@ api:
 
 improvement:
   add a smart move object and autodetect group of moving object in genlist.
+  reduce memory used by all this callback we setup around.