diff --git a/src/guard.rs b/src/guard.rs
index e626025..9ef134a 100644
--- a/src/guard.rs
+++ b/src/guard.rs
@@ -1,3 +1,5 @@
+//! Request guard for protecting a router against non-htmx requests.
+
 use std::{
     fmt,
     future::Future,