diff --git a/TODO b/TODO
index 0d6c7b20cf22a4c6b643948494bdaaaa57b456e7..efe764c5024e0657063b9f1912b543e55a2cad35 100644
--- a/TODO
+++ b/TODO
@@ -10,6 +10,7 @@
     correlate with star size and alphabet size, etc.
     create separate graphs for 3 modes: --lalr, pager, --canonical
   Could --interpret-error obey --trace?
+  --update-errors should KEEP the comments in between segments!
   In --list-errors and --interpret-error:
     improve output by WARNING about any spurious reductions
       (i.e. non-default reductions that take place at the end)