diff --git a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-nav.component.ts b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-nav.component.ts
index 318e845b..ce1b693b 100644
--- a/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-nav.component.ts
+++ b/projects/ucap-webmessenger-app/src/app/layouts/messenger/components/left-nav.component.ts
@@ -44,7 +44,7 @@ export class LeftNaviComponent implements OnInit, OnDestroy {
           if (!this.intervalFlashFrame) {
             this.intervalFlashFrame = setInterval(() => {
               this.nativeService.onFlashFlame();
-            }, 1000);
+            }, 2000);
           }
         } else {
           this.nativeService.offFlashFlame();