diff --git a/frontend/src/event-store.ts b/frontend/src/event-store.ts
index 37703d8..8277228 100644
--- a/frontend/src/event-store.ts
+++ b/frontend/src/event-store.ts
@@ -37,7 +37,7 @@ export class EventStore {
   private clearOld() {
     const now = Date.now();
     const firstCurrent = this.events.findIndex((v) => (now - v.at.getTime()) <= CURRENT_THRESHOLD * 1000);
-    const deleted = this.events.splice(0, firstCurrent !== -1 ? firstCurrent : undefined);
+    const deleted = this.events.splice(0, firstCurrent !== -1 ? firstCurrent : this.events.length);
 
     for (const deletedEvent of deleted) {
       for (const listener of this.listeners) {