diff --git a/docs/designs/ui/compass-outbound-session-header/design.md b/docs/designs/ui/compass-outbound-session-header/design.md
index 337ee838..45f5754c 100644
--- a/docs/designs/ui/compass-outbound-session-header/design.md
+++ b/docs/designs/ui/compass-outbound-session-header/design.md
@@ -582,10 +582,10 @@ Cases:
 - getter returns `undefined` ⇒ header **absent** (not empty) — **direct seam,
   all three assertions above**. The guard can throw on this input, so absence
   alone is not enough. `captureRequest`'s capturing `fetch` always `throw`s
-  (`index.test.ts:87`), so its gate `rejects.toThrow()` cannot tell "threw
-  early" from "reached `next`" — it goes green on the very defect the case
-  exists to catch. Assertion 3 (`result` is the sentinel) is what proves
-  nothing threw.
+  (`"captureRequest: short-circuit before response"`), so its gate
+  `rejects.toThrow()` cannot tell "threw early" from "reached `next`" — it goes
+  green on the very defect the case exists to catch. Assertion 3 (`result` is
+  the sentinel) is what proves nothing threw.
 - getter returns `""` ⇒ header absent — capture seam.
 - oversized value (201 ASCII chars) ⇒ header absent — capture seam.
 - **exactly 200 ASCII chars ⇒ header PRESENT** (capture seam). This is the