diff --git a/README.md b/README.md
index c3c4d9e..aa13083 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ Specify a your personal auth token in your mpv.conf then;
 `sudo vim /etc/nginx/nginx.conf`
 
 ```json
-        map $http_useragent $auth {
+        map $http_user_agent $auth {
             default 0;
             "your custom user agent (for example a 128 char string or more or less)" 1;
         }