diff --git a/Trojan-TCP-XTLS/nginx.conf b/Trojan-TCP-XTLS/nginx.conf
index 3231746..5cbe234 100644
--- a/Trojan-TCP-XTLS/nginx.conf
+++ b/Trojan-TCP-XTLS/nginx.conf
@@ -49,8 +49,8 @@ http {
 
         include /etc/nginx/default.d/*.conf;
 
-        # 开启HSTS，混sslab的A+
-	add_header Strict-Transport-Security "max-age=63072000" always;
+        # 开启 HSTS ，混 sslab 的 A+
+        add_header Strict-Transport-Security "max-age=63072000" always;
 
         error_page 404 /404.html;
             location = /40x.html {