diff --git a/TODO.md b/TODO.md
index 0591ab3..44d1c05 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,5 +1,4 @@
  - Fix unit autoconversion (Hz * s)
- - Reference previous results
  - Minimize parenthesis when printing expressions
  - Sane autoconversion (mi + km)