diff --git a/crates/matrix-sdk-crypto/src/js/responses.rs b/crates/matrix-sdk-crypto/src/js/responses.rs
index 60368f486..03b19274d 100644
--- a/crates/matrix-sdk-crypto/src/js/responses.rs
+++ b/crates/matrix-sdk-crypto/src/js/responses.rs
@@ -1,3 +1,5 @@
+//! Types related to responses.
+
 pub(crate) use ruma::api::client::{
     backup::add_backup_keys::v3::Response as KeysBackupResponse,
     keys::{