diff --git a/src/features/app-updates/components/WebUIUpdateChecker.tsx b/src/features/app-updates/components/WebUIUpdateChecker.tsx
index 066d302e..119f8bcf 100644
--- a/src/features/app-updates/components/WebUIUpdateChecker.tsx
+++ b/src/features/app-updates/components/WebUIUpdateChecker.tsx
@@ -33,7 +33,7 @@ const FORCED_REFRESH_THRESHOLD = d(30).seconds.inWholeMilliseconds;
 
 const INITIAL_LOAD_TIMESTAMP_KEY = 'webUIInitialLoadTimestamp';
 
-AppStorage.session.setItem(INITIAL_LOAD_TIMESTAMP_KEY, Date.now());
+AppStorage.session.setItemIfMissing(INITIAL_LOAD_TIMESTAMP_KEY, Date.now());
 
 export const WebUIUpdateChecker = () => {
     const { t } = useTranslation();
diff --git a/src/lib/storage/AppStorage.ts b/src/lib/storage/AppStorage.ts
index b3c8e079..e84ddea9 100644
--- a/src/lib/storage/AppStorage.ts
+++ b/src/lib/storage/AppStorage.ts
@@ -63,6 +63,12 @@ export class Storage {
         this.storage.setItem(key, valueToStore);
         fireEvent(valueToStore as string);
     }
+
+    setItemIfMissing(key: string, value: unknown, emitEvent?: boolean): void {
+        if (this.getItem(key) === null) {
+            this.setItem(key, value, emitEvent);
+        }
+    }
 }
 
 export class AppStorage {