diff --git a/site/nginx/nginx.conf b/site/nginx/nginx.conf
index 5d8974d2..9bba1d0e 100644
--- a/site/nginx/nginx.conf
+++ b/site/nginx/nginx.conf
@@ -49,7 +49,8 @@ http {
 
     # HTTPS 服务器
     server {
-        listen 443 ssl http2;
+        listen 443 ssl;
+        http2 on;
         server_name smartsensiguard.cn www.smartsensiguard.cn;
 
         # SSL 证书配置