diff --git a/lib/client/hijack/wrapSubscription.js b/lib/client/hijack/wrapSubscription.js
index e19661da..d81f4ff1 100644
--- a/lib/client/hijack/wrapSubscription.js
+++ b/lib/client/hijack/wrapSubscription.js
@@ -27,7 +27,7 @@ export function wrapSubscription () {
     const onReady = () => {
       Kadira.webVitals.completedObjects += 1;
       Kadira.webVitals.subs.push({ start, end: Ntp._now() });
-      oldReady?.();
+      oldReady && oldReady();
     };
     callbacks.onReady = onReady;
     return oldSubscribe(arguments[0],...params, callbacks);
diff --git a/lib/client/models/webVitals.js b/lib/client/models/webVitals.js
index 69a62642..6b74eef3 100644
--- a/lib/client/models/webVitals.js
+++ b/lib/client/models/webVitals.js
@@ -209,7 +209,6 @@ export class WebVitalsModel {
       },{}),
       ...browserInfo,
       commitHash: Meteor.gitCommitHash,
-      cacheCleaned: !localStorage?.length && !sessionStorage?.length,
       archVersion: getClientArchVersion(arch),
       incompleteSession: this.pendingObjects > 0 && this.pendingObjects > this.completedObjects
     };