diff --git a/tower/src/lib.rs b/tower/src/lib.rs
index 179edfbec..ce911e9d8 100644
--- a/tower/src/lib.rs
+++ b/tower/src/lib.rs
@@ -219,6 +219,7 @@ pub use tower_layer::Layer;
 pub use tower_service::Service;
 
 #[allow(unreachable_pub)]
+#[cfg(any(feature = "balance", feature = "discover", feature = "make"))]
 mod sealed {
     pub trait Sealed<T> {}
 }
diff --git a/tower/src/util/rng.rs b/tower/src/util/rng.rs
index 9b6d307d9..5b2f9fce7 100644
--- a/tower/src/util/rng.rs
+++ b/tower/src/util/rng.rs
@@ -116,6 +116,7 @@ where
 ///
 /// ref: This was borrowed and modified from the following Rand implementation
 /// https://github.com/rust-random/rand/blob/b73640705d6714509f8ceccc49e8df996fa19f51/src/seq/index.rs#L375-L411
+#[cfg(feature = "balance")]
 pub(crate) fn sample_floyd2<R: Rng>(rng: &mut R, length: u64) -> [u64; 2] {
     debug_assert!(2 <= length);
     let aidx = rng.next_range(0..length - 1);