diff --git a/src/types/mod.rs b/src/types/mod.rs
index e67c203..f41a083 100644
--- a/src/types/mod.rs
+++ b/src/types/mod.rs
@@ -29,6 +29,9 @@ mod utils;
 ///
 /// While `T` does not have to implement `Composite` to be used with `Shared`,
 /// the primary use of `Shared` is with types that implement `Composite`.
+/// 
+/// When the `client` feature is disabled, this does nothing (same as just `T`),
+/// since `Composite` structures are disabled.
 #[cfg(feature = "client")]
 pub type Shared<T> = Arc<RwLock<T>>;
 #[cfg(not(feature = "client"))]