diff --git a/docs/configuring-well-known.md b/docs/configuring-well-known.md
index ea3d32bbb..94957752c 100644
--- a/docs/configuring-well-known.md
+++ b/docs/configuring-well-known.md
@@ -71,6 +71,7 @@ server {
 
 ```caddy
 proxy /.well-known/matrix https://matrix.DOMAIN
+header /.well-known/matrix Access-Control-Allow-Origin  *
 ```
 
 Make sure to: