diff --git a/sites/default/default.settings.php b/sites/default/default.settings.php
index 7f28c29..d60d5ad 100644
--- a/sites/default/default.settings.php
+++ b/sites/default/default.settings.php
@@ -374,31 +374,33 @@
 
 /**
  * Set this value if your proxy server sends the client IP in a header
- * other than X-Forwarded-For.
+ * other than X_FORWARDED_FOR.
  */
-# $settings['reverse_proxy_header'] = 'X_CLUSTER_CLIENT_IP';
+# $settings['reverse_proxy_header'] = 'X_FORWARDED_FOR';
 
 /**
  * Set this value if your proxy server sends the client protocol in a header
- * other than X-Forwarded-Proto.
+ * other than X_FORWARDED_PROTO.
  */
 # $settings['reverse_proxy_proto_header'] = 'X_FORWARDED_PROTO';
 
 /**
- * Set this value if your proxy server sends the client protocol in a header
- * other than X-Forwarded-Host.
+ * Set this value if your proxy server sends the client host in a header
+ * other than X_FORWARDED_HOST.
  */
 # $settings['reverse_proxy_host_header'] = 'X_FORWARDED_HOST';
 
 /**
- * Set this value if your proxy server sends the client protocol in a header
- * other than X-Forwarded-Port.
+ * Set this value if your proxy server sends the client port in a header
+ * other than X_FORWARDED_PORT.
  */
 # $settings['reverse_proxy_port_header'] = 'X_FORWARDED_PORT';
 
 /**
- * Set this value if your proxy server sends the client protocol in a header
- * other than Forwarded.
+ * Set this value if your proxy server sends standard combined forwarding
+ * information in a header other than FORWARDED.
+ *
+ * @see https://tools.ietf.org/html/rfc7239
  */
 # $settings['reverse_proxy_forwarded_header'] = 'FORWARDED';