diff --git a/todo.md b/todo.md
index 503c456..6891718 100644
--- a/todo.md
+++ b/todo.md
@@ -395,7 +395,7 @@ Require the path step to reach a sibling category.
 
 ### 110. Refuse an empty segment in a path `Fake`, `FakeRecord` and the CLI take, as a reference does: `sv_SE.person.` reports `path has an empty segment`.
 
-Today `fejkdata 'sv_SE.person.'` reports `no field ""`, while `{/sv_SE.person.}` reports `path has an empty segment`. `grammar.CheckSegments` is the check a reference and a sibling path run.
+Today `fejkdata 'sv_SE.person.'` reports `no field ""`, while `{/sv_SE.person.}` reports `path has an empty segment`. `grammar.CheckSegments` is the check a reference, a sibling path and a step up `..` run.
 
 ### 107. Move the template engine into `internal/`, leaving the root the public API and its options.