diff --git a/index.html b/index.html
index ec16ec678..037ef1d9a 100644
--- a/index.html
+++ b/index.html
@@ -3208,8 +3208,8 @@
The server that hosts the web application could attempt to
predetermine the end-user's language by using geotargeting or by
- using content negotiation (e.g., using [[RFC7540]]'s
- "`Accept-Language`" header, or even a custom HTTP header).
+ using content negotiation (e.g., using an HTTP "`Accept-Language`"
+ header [[RFC9110]], or even a custom HTTP header).