diff --git a/tokio-timer/src/delay.rs b/tokio-timer/src/delay.rs
index 41210690e..7ba8be758 100644
--- a/tokio-timer/src/delay.rs
+++ b/tokio-timer/src/delay.rs
@@ -91,6 +91,13 @@ impl Delay {
     }
 }
 
+#[cfg(feature = "async-traits")]
+impl futures_core::FusedFuture for Delay {
+    fn is_terminated(&self) -> bool {
+        self.is_elapsed()
+    }
+}
+
 impl Future for Delay {
     type Output = ();
 
diff --git a/tokio-timer/src/interval.rs b/tokio-timer/src/interval.rs
index 31e003f21..ea5ca7d4a 100644
--- a/tokio-timer/src/interval.rs
+++ b/tokio-timer/src/interval.rs
@@ -100,6 +100,13 @@ impl Interval {
     }
 }
 
+#[cfg(feature = "async-traits")]
+impl futures_core::FusedStream for Interval {
+    fn is_terminated(&self) -> bool {
+        false
+    }
+}
+
 #[cfg(feature = "async-traits")]
 impl futures_core::Stream for Interval {
     type Item = Instant;