diff --git a/TODO.md b/TODO.md
index fdb78588..67776544 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,4 +1,5 @@
 - require explicit calls to uiContainerUpdate() everywhere, because sigh...
+	- forbid uiControlSetParent() when there already is a parent
 - consider calling setAppleMenu: for the application menu; it doesn't seem to make much of a difference but
 - http://stackoverflow.com/questions/4543087/applicationwillterminate-and-the-dock-but-wanting-to-cancel-this-action