diff --git a/packages/notifier/src/storesub.js b/packages/notifier/src/storesub.js
index 41f76ad5ce03..7e2c80fa2f8b 100644
--- a/packages/notifier/src/storesub.js
+++ b/packages/notifier/src/storesub.js
@@ -3,9 +3,6 @@ import { E } from '@endo/eventual-send';
 import { Far, makeMarshal } from '@endo/marshal';
 import { observeIteration } from './asyncIterableAdaptor.js';
 
-/** @template T @typedef {import('@endo/marshal').CapData<T>} CapData */
-/** @template T @typedef {import('@endo/eventual-send').EOnly<T>} EOnly */
-
 /**
  * Begin iterating the source, publishing serialized iteration values.  If the
  * publish operation rejects, the iteration will be terminated.
@@ -15,11 +12,11 @@ import { observeIteration } from './asyncIterableAdaptor.js';
  * data out-of-band.
  *
  * @template T
- * @param {ERef<Subscription<T>>} subscription
+ * @param {Subscription<T>} subscription
  * @param {ERef<StorageNode>} [storageNode]
  * @param {ERef<ReturnType<typeof makeMarshal>>} [marshaller]
  */
-export const makeStoredSubscription = async (
+export const makeStoredSubscription = (
   subscription,
   storageNode,
   marshaller = makeMarshal(undefined, undefined, {
@@ -67,13 +64,13 @@ export const makeStoredSubscription = async (
     }).catch(fail);
   }
 
-  /** @type {EOnly<StoredSubscription<T>>} */
+  /** @type {StoredSubscription<T>} */
   const storesub = Far('StoredSubscription', {
     getStoreKey: () => storageNode && E(storageNode).getStoreKey(),
     getUnserializer: () => unserializer,
-    getSharableSubscriptionInternals: () =>
-      E(subscription).getSharableSubscriptionInternals(),
-    [Symbol.asyncIterator]: E(subscription)[Symbol.asyncIterator],
+    getSharableSubscriptionInternals:
+      subscription.getSharableSubscriptionInternals,
+    [Symbol.asyncIterator]: subscription[Symbol.asyncIterator],
   });
   return storesub;
 };
diff --git a/packages/notifier/test/test-stored-subscription.js b/packages/notifier/test/test-stored-subscription.js
index da4170a5bf9d..af20be24a080 100644
--- a/packages/notifier/test/test-stored-subscription.js
+++ b/packages/notifier/test/test-stored-subscription.js
@@ -16,14 +16,16 @@ const makeFakeStorage = (path, publication) => {
     storeName: 'swingset',
     storeSubkey: `swingset/data:${fullPath}`,
   });
-  /** @type {Storage} */
-  return Far('fakeStorage', {
+  /** @type {StorageNode} */
+  const storage = Far('fakeStorage', {
     getStoreKey: () => storeKey,
     setValue: value => {
       assert.typeof(value, 'string');
       publication.updateState(value);
     },
+    getChildNode: () => storage,
   });
+  return storage;
 };
 
 test('stored subscription', async t => {
diff --git a/packages/run-protocol/src/vpool-xyk-amm/types.js b/packages/run-protocol/src/vpool-xyk-amm/types.js
index 7a1911507c96..5088202d83b6 100644
--- a/packages/run-protocol/src/vpool-xyk-amm/types.js
+++ b/packages/run-protocol/src/vpool-xyk-amm/types.js
@@ -82,7 +82,7 @@
  * @property {() => PriceAuthority} getToCentralPriceAuthority
  * @property {() => PriceAuthority} getFromCentralPriceAuthority
  * @property {() => VirtualPool} getVPool
- * @property {() => Subscription<PoolMetricsNotification>} getMetrics
+ * @property {() => StoredSubscription<PoolMetricsNotification>} getMetrics
  */
 
 /**
@@ -136,7 +136,7 @@
  * Prices and notifications about changing prices.
  * @property {() => Brand[]} getAllPoolBrands
  * @property {() => Allocation} getProtocolPoolBalance
- * @property {() => EOnly<StoredSubscription<MetricsNotification>>} getMetrics
+ * @property {() => StoredSubscription<MetricsNotification>} getMetrics
  * @property {(brand: Brand) => Subscription<PoolMetricsNotification>} getPoolMetrics
  */