diff --git a/doc/APACHE.txt b/doc/APACHE.txt
index 6b4efe76..99fc8a4f 100644
--- a/doc/APACHE.txt
+++ b/doc/APACHE.txt
@@ -19,7 +19,7 @@ Then add the following lines to your VirtualHost section:
 
   ProxyVia On
   ProxyPreserveHost On
-  RequestHeader set X_FORWARDED_PROTO 'https' env=HTTPS
+  RequestHeader set X-Forwarded-Proto 'https' env=HTTPS
 
 Thats it.