diff --git a/todo b/todo
index 266da7d..dcc7c2f 100644
--- a/todo
+++ b/todo
@@ -4,3 +4,4 @@
   between user errors and program exceptions.
 * We're now getting to the point where we must implement locking. Go through the
   driver libs and give them locking.
+* Rename WORLD_USE_BODY_THREAD to have CONFIG_ prefix in config.h.