diff --git a/packages/inter-protocol/src/proposals/utils.js b/packages/inter-protocol/src/proposals/utils.js
index a163ea4c33a..d0403319d43 100644
--- a/packages/inter-protocol/src/proposals/utils.js
+++ b/packages/inter-protocol/src/proposals/utils.js
@@ -109,10 +109,12 @@ export const makeInstallCache = async (
   };
 
   const wrapInstall = install => async (mPath, bPath, opts) => {
-    // @ts-expect-error https://github.com/Agoric/agoric-sdk/pull/6520/
-    const { endoZipBase64Sha512: sha512 } = await loadBundle(bPath).then(
-      m => m.default,
+    const bundle = await loadBundle(bPath).then(m => m.default);
+    assert(
+      'endoZipBase64Sha512' in bundle,
+      'bundle must be EndoZipBase64Bundle',
     );
+    const { endoZipBase64Sha512: sha512 } = bundle;
     const detail = await provideWhen(working, sha512, () =>
       install(mPath, bPath, opts).then(installation => ({
         installation,
diff --git a/packages/vats/src/vat-provisioning.js b/packages/vats/src/vat-provisioning.js
index e332ae8f9a5..f89fa9a8506 100644
--- a/packages/vats/src/vat-provisioning.js
+++ b/packages/vats/src/vat-provisioning.js
@@ -51,8 +51,7 @@ export function buildRootObject() {
         // Update the notifier when the chainBundle resolves.
         const { notifier, updater } = makeNotifierKit();
         chainBundle.then(clientHome => {
-          // @ts-expect-error https://github.com/Agoric/agoric-sdk/pull/6520/
-          updater(harden({ clientHome, clientAddress: address }));
+          updater.updateState(harden({ clientHome, clientAddress: address }));
         });
         return Far('emulatedClientFacet', {
           getChainBundle: () => chainBundle,