diff --git a/tokio-trace-futures/src/lib.rs b/tokio-trace-futures/src/lib.rs
index 1584e55540..e244097297 100644
--- a/tokio-trace-futures/src/lib.rs
+++ b/tokio-trace-futures/src/lib.rs
@@ -21,11 +21,11 @@ pub trait Instrument: Sized {
 pub trait WithSubscriber: Sized {
     fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
     where
-        S: Subscriber + Send + Sync + 'static,
+        S: Into<Dispatch>,
     {
         WithDispatch {
             inner: self,
-            dispatch: Dispatch::new(subscriber),
+            dispatch: subscriber.into(),
         }
     }
 }