diff --git a/rust/pv/src/openssl_extensions/ml_kem.rs b/rust/pv/src/openssl_extensions/ml_kem.rs
index f1aceaf0..a03e33c1 100644
--- a/rust/pv/src/openssl_extensions/ml_kem.rs
+++ b/rust/pv/src/openssl_extensions/ml_kem.rs
@@ -2,7 +2,7 @@
 //
 // Copyright IBM Corp.
 
-#![expect(unused)]
+#![cfg_attr(not(test), expect(unused))]
 
 use std::ffi::CStr;
 use std::ptr::NonNull;