diff --git a/pageserver/src/tenant/storage_layer/layer.rs b/pageserver/src/tenant/storage_layer/layer.rs
index db480f1953..80d221613e 100644
--- a/pageserver/src/tenant/storage_layer/layer.rs
+++ b/pageserver/src/tenant/storage_layer/layer.rs
@@ -29,7 +29,8 @@ use super::{
 /// There are two kinds of layers, in-memory and on-disk layers. In-memory
 /// layers are used to ingest incoming WAL, and provide fast access to the
 /// recent page versions. On-disk layers are stored as files on disk, and are
-/// immutable. This type represents the on-disk kind.
+/// immutable. This type represents the on-disk kind while in-memory kind are represented by
+/// [`InMemoryLayer`].
 ///
 /// Furthermore, there are two kinds of on-disk layers: delta and image layers.
 /// A delta layer contains all modifications within a range of LSNs and keys.
@@ -37,6 +38,8 @@ use super::{
 /// LSN.
 ///
 /// This type models the on-disk layers, which can be evicted and on-demand downloaded.
+///
+/// [`InMemoryLayer`]: inmemory_layer::InMemoryLayer
 #[derive(Clone)]
 pub(crate) struct Layer(Arc<LayerInner>);