diff --git a/jcp/jcp-rs/crates/jcp-receipt/src/lib.rs b/jcp/jcp-rs/crates/jcp-receipt/src/lib.rs
index 2f3892c5e..8446364cc 100644
--- a/jcp/jcp-rs/crates/jcp-receipt/src/lib.rs
+++ b/jcp/jcp-rs/crates/jcp-receipt/src/lib.rs
@@ -878,12 +878,6 @@ mod tests {
         (allow_f, grant, allow_d, deny_d)
     }
 
-    /// **The migration guarantee.** These are the REAL bytes published in
-    /// `conformance/v1/vectors.json` before `payload_hash` existed, sealed under
-    /// `jcp/1`. They MUST still verify — version dispatch recomputes the legacy
-    /// preimage — or the bump silently invalidated every receipt in the wild.
-
-
     /// Absent, the field changes nothing: the same bytes, so every receipt
     /// sealed before this existed and every published vector still verifies.
     #[test]
@@ -956,6 +950,17 @@ mod tests {
         assert!(environment_of(&wire).is_none(), "an unparseable id is not a claim");
     }
 
+    /// **The migration guarantee.** These are the REAL bytes published in
+    /// `conformance/v1/legacy_jcp1.json`, sealed under `jcp/1` before
+    /// `payload_hash` existed. They MUST still verify — version dispatch
+    /// recomputes the legacy preimage — or the bump silently invalidated every
+    /// receipt already in the wild.
+    ///
+    /// The constant below is a copy of that file's **allow** envelope, kept so this
+    /// crate's own suite can stand alone. The published file carries an allow *and*
+    /// a deny, and both are verified against the file itself by
+    /// `jcp-conformance`'s `tests/pack.rs` — which is what a third party actually
+    /// downloads, and what should be believed if the two ever disagree.
     #[test]
     fn published_v1_receipts_still_verify() {
         const V1_ALLOW: &str = "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";