diff --git a/src/MessageSource/MessageSource.ts b/src/MessageSource/MessageSource.ts
index 0f780f2..b77ea4b 100644
--- a/src/MessageSource/MessageSource.ts
+++ b/src/MessageSource/MessageSource.ts
@@ -26,6 +26,7 @@ export class MessageSource extends EventEmitter implements MessageSource {
   protected onEventArrive(packet: KHEventPacket): void {
     if ((packet as KHEventPacket).sn === this.sn + 1) {
       this.sn += 1
+      if (this.sn >= 65535) this.sn = 0;
       this.emit('message', cloneDeep(packet.d))
       this.eventProcess(packet)
       this.buffer.sort((a, b) => a.sn - b.sn)