diff --git a/TODO.md b/TODO.md
index 284e0bf..02f5f90 100644
--- a/TODO.md
+++ b/TODO.md
@@ -22,4 +22,5 @@
 - [x] autogenerated config dox page
 - [x] remove `invokeParallel()`
 - [x] Specialize `invokeReduce()` with `invokeMerge()`.
-- [x] Rename all hooks to dot-first notation; rewrite `lookupFlecks()`.
\ No newline at end of file
+- [x] Rename all hooks to dot-first notation; rewrite `lookupFlecks()`.
+- [ ] ensureUniqueReduction moved into invokeMerge