diff --git a/tests/no_type_leakage.rs b/tests/no_type_leakage.rs
index 068c2503..19fcdfc7 100644
--- a/tests/no_type_leakage.rs
+++ b/tests/no_type_leakage.rs
@@ -12,6 +12,7 @@ struct Foo {
     x: i32,
 }
 
+#[allow(unused)]
 pub struct Bar(Foo);
 
 impl Bar {