diff --git a/src/lib.rs b/src/lib.rs
index 574cf1f..bb7610f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -223,6 +223,7 @@ impl AtomicWaker {
     /// Create an `AtomicWaker`.
     pub const fn new() -> Self {
         // Make sure that task is Sync
+        #[allow(dead_code)]
         trait AssertSync: Sync {}
         impl AssertSync for Waker {}