diff --git a/packages/notifier/src/stored-notifier.js b/packages/notifier/src/stored-notifier.js
index 7f2303d75736..08ed9028c258 100644
--- a/packages/notifier/src/stored-notifier.js
+++ b/packages/notifier/src/stored-notifier.js
@@ -39,6 +39,8 @@ export const makeStoredNotifier = (notifier, storageNode, marshaller) => {
     fail(reason) {
       console.error('StoredNotifier failed to iterate', reason);
     },
+  }).catch(reason => {
+    console.error('StoredNotifier halted iteration', reason);
   });
 
   /** @type {Unserializer} */
diff --git a/packages/notifier/test/test-publish-kit.js b/packages/notifier/test/test-publish-kit.js
index 4c66ae4463f1..903b97b5e2f8 100644
--- a/packages/notifier/test/test-publish-kit.js
+++ b/packages/notifier/test/test-publish-kit.js
@@ -650,8 +650,16 @@ const verifySubscribeAfterSequencing = test.macro(async (t, makePublishKit) => {
   const sub2LIFO = [];
 
   const sub1FirstAll = [];
-  E.when(sub1.subscribeAfter(), cell => void sub1FirstAll.push(cell), t.fail);
-  E.when(sub1.subscribeAfter(), cell => void sub1FirstAll.push(cell), t.fail);
+  void E.when(
+    sub1.subscribeAfter(),
+    cell => void sub1FirstAll.push(cell),
+    t.fail,
+  );
+  void E.when(
+    sub1.subscribeAfter(),
+    cell => void sub1FirstAll.push(cell),
+    t.fail,
+  );
 
   pub2.publish(undefined);
   sub2LIFO.unshift(await sub2.subscribeAfter());
@@ -670,17 +678,17 @@ const verifySubscribeAfterSequencing = test.macro(async (t, makePublishKit) => {
 
   const sub1FirstLateAll = [];
   const sub1SecondAll = [];
-  E.when(
+  void E.when(
     sub1.subscribeAfter(),
     cell => void sub1FirstLateAll.push(cell),
     t.fail,
   );
-  E.when(
+  void E.when(
     sub1.subscribeAfter(0n),
     cell => void sub1FirstLateAll.push(cell),
     t.fail,
   );
-  E.when(
+  void E.when(
     sub1.subscribeAfter(sub1FirstAll[0].publishCount),
     cell => void sub1SecondAll.push(cell),
     t.fail,
@@ -711,7 +719,7 @@ const verifySubscribeAfterSequencing = test.macro(async (t, makePublishKit) => {
   for (const p of [sub1.subscribeAfter(), sub1.subscribeAfter(0n)]) {
     E.when(p, cell => void sub1SecondLateAll.push(cell), t.fail);
   }
-  E.when(
+  void E.when(
     sub1.subscribeAfter(sub1SecondAll[0].publishCount),
     result => void sub1FinalAll.push(result),
     t.fail,