diff --git a/packages/zone/src/durable.js b/packages/zone/src/durable.js
index 22cfe4b733a7..a8460f439358 100644
--- a/packages/zone/src/durable.js
+++ b/packages/zone/src/durable.js
@@ -89,6 +89,10 @@ export const makeDurableZone = (baggage, baseLabel = 'durableZone') => {
   /** @type {import('.').Zone['exoClass']} */
   const exoClass = (...args) => prepareExoClass(baggage, ...args);
   /** @type {import('.').Zone['exoClassKit']} */
+  // @ts-ignore This type check regressed inexplicably with the release
+  // following after @endo/exo@0.2.6.
+  // The lint error does not occur in local lint, but does in integration with
+  // @agoric/vats, so can not be suppressed with ts-expect-error.
   const exoClassKit = (...args) => prepareExoClassKit(baggage, ...args);
   /** @type {import('.').Zone['exo']} */
   const exo = (...args) => prepareExo(baggage, ...args);