diff --git a/docs/example.nginx.conf b/docs/example.nginx.conf
index 8319c657b..0a2edcf57 100644
--- a/docs/example.nginx.conf
+++ b/docs/example.nginx.conf
@@ -177,8 +177,8 @@ server {
         add_header Cache-Control max-age=31536000;
         add_header 'Access-Control-Allow-Origin' '*';
         add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
-        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range';
-        add_header 'Access-Control-Expose-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range';
+        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range,Content-Length';
+        add_header 'Access-Control-Expose-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range,Content-Length';
         try_files $uri =404;
     }