diff --git a/juniper_subscriptions/src/lib.rs b/juniper_subscriptions/src/lib.rs
index 9c60b500..789a13a0 100644
--- a/juniper_subscriptions/src/lib.rs
+++ b/juniper_subscriptions/src/lib.rs
@@ -188,7 +188,7 @@ where
}
let stream = futures::stream::poll_fn(
- move |mut ctx| -> Poll