diff --git a/encodings/bytebool/src/compute.rs b/encodings/bytebool/src/compute.rs
index 7f9a4e803de..e2ae35dc41d 100644
--- a/encodings/bytebool/src/compute.rs
+++ b/encodings/bytebool/src/compute.rs
@@ -73,6 +73,8 @@ impl CastKernel for ByteBool {
}
impl MaskReduce for ByteBool {
+ const VALIDITY_IS_METADATA_ONLY: bool = true;
+
fn mask(array: ArrayView<'_, Self>, mask: &ArrayRef) -> VortexResult