diff --git a/.hyperhive/review-classifier.yml b/.hyperhive/review-classifier.yml
index 3874f7e2..6512fc98 100644
--- a/.hyperhive/review-classifier.yml
+++ b/.hyperhive/review-classifier.yml
@@ -54,7 +54,9 @@ classifications:
       `nix/checks.nix`, a crate's `tests/` directory, or Rust inside
       `#[cfg(test)]` or a `#[test]` function) changes no behaviour: the
       question is not applicable. So is a diff that changes only
-      documentation. A NixOS module assertion, a Grafana/alerting rule, or
+      documentation. So is a diff that only deletes code together with the
+      tests of that code and adds no logic: nothing new needs a test. A NixOS
+      module assertion, a Grafana/alerting rule, or
       the literal text of a log or tracing message is not held to this
       either. A PR that changes logic and tests together matches.
     polarity: positive