diff --git a/princess-bench-report.md b/princess-bench-report.md
index 99d5dc5..cb2e2bc 100644
--- a/princess-bench-report.md
+++ b/princess-bench-report.md
@@ -266,6 +266,18 @@ resolving it, so none of our counters saw anything. `illegal`, `rejected` and
 `failed` are all clean for these matches. A defect of this shape can only ever
 appear as a stall.
 
+**The scenario contains artillery contrary to intent.**
+`4v4-jihad-s4240001-vehicle` fields a `Chaparral Missile Artillery Tank` on both
+sides, and jmm's instruction was that the scenarios field no artillery units. It
+is the only scenario all night that offered one, and it cost the `vehicles` 4v4
+bucket **4 of its 24 games**.
+
+**It has deliberately not been changed.** `vehicles` is already measured against
+this suite, and altering the suite now would make a future `vehicles` run
+non-comparable with the 40.6% above — the suite is fingerprinted for exactly
+this reason. Removing or replacing the scenario is a decision to take **between**
+benchmark rounds, not inside one.
+
 **The fix, described and not made.** Two options, and they are not the same
 size: