diff --git a/TODO.md b/TODO.md
index 728bf3c0..445685fd 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,3 +1,5 @@
+- make sure all OS X event handlers that use target-action set the action to NULL when the target is unset
+
 - provide a way to get the currently selected uiTab page? set?
 
 - add uiPi for portability; compare against: