diff --git a/TODO.md b/TODO.md
index 36d892f..b982af8 100644
--- a/TODO.md
+++ b/TODO.md
@@ -9,4 +9,6 @@ then fork and exec shfx as child (+ close ptmx), then close pts as parent.
 - [ ] Should I compile ncurses with --with-pthread? (see `man 3x ncurses`)
       What about --enable-widec? (are these just ligatures?)
 
+- [ ] cursetree shits itself if width/height are 0 on bifurcation
 
+- [ ] ensure NDEBUG is set for preprocessor to avoid <assert.h> statements if not debugging