diff --git a/tokio-util/src/sync/cancellation_token.rs b/tokio-util/src/sync/cancellation_token.rs
index 9a8b40255b6..62d9bd05e7b 100644
--- a/tokio-util/src/sync/cancellation_token.rs
+++ b/tokio-util/src/sync/cancellation_token.rs
@@ -296,7 +296,7 @@ impl CancellationToken {
 
 // ===== impl RunUntilCancelledFuture =====
 
-impl<C, F: Future> Future for RunUntilCancelledFuture<C, F>
+impl<C, F> Future for RunUntilCancelledFuture<C, F>
 where
     C: Future<Output = ()>,
     F: Future,