diff --git a/scripts/helmcharts/openreplay/charts/assist/values.yaml b/scripts/helmcharts/openreplay/charts/assist/values.yaml
index a3a14eff5..a3b12169d 100644
--- a/scripts/helmcharts/openreplay/charts/assist/values.yaml
+++ b/scripts/helmcharts/openreplay/charts/assist/values.yaml
@@ -82,6 +82,10 @@ ingress:
       add_header 'Access-Control-Allow-Headers' 'sessionid, Content-Type, Authorization' always;
       add_header 'Access-Control-Max-Age' 1728000;
       add_header 'Content-Type' 'text/plain charset=UTF-8';
+      add_header 'Content-Length' 0;
+      if ($request_method = 'OPTIONS') {
+        return 204;
+      }
     nginx.ingress.kubernetes.io/proxy-read-timeout: "3600"
     nginx.ingress.kubernetes.io/proxy-send-timeout: "3600"
     # kubernetes.io/ingress.class: nginx