diff --git a/crates/fayalite/src/expr/ops.rs b/crates/fayalite/src/expr/ops.rs
index b8ef4f7..f4cfebd 100644
--- a/crates/fayalite/src/expr/ops.rs
+++ b/crates/fayalite/src/expr/ops.rs
@@ -579,6 +579,8 @@ macro_rules! make_impls {
     (#[kind(i64)] $($rest:tt)*) => {make_impls! { #[type([][] (i64))] $($rest)* }};
     (#[kind(i128)] $($rest:tt)*) => {make_impls! { #[type([][] (i128))] $($rest)* }};
 }
+
+#[cfg(test)]
 pub(crate) use make_impls;
 
 #[cfg(test)]