diff --git a/futures-util/src/stream/futures_unordered/mod.rs b/futures-util/src/stream/futures_unordered/mod.rs
index 913e260fd..7f7a00018 100644
--- a/futures-util/src/stream/futures_unordered/mod.rs
+++ b/futures-util/src/stream/futures_unordered/mod.rs
@@ -53,6 +53,14 @@ use self::ready_to_run_queue::{Dequeue, ReadyToRunQueue};
 ///
 /// This type is only available when the `std` or `alloc` feature of this
 /// library is activated, and it is activated by default.
+///
+/// # Cancel safety
+///
+/// This type is cancellation-safe when the inner [`Future`] is
+/// cancellation-safe. If the future type is cancellation-safe, and
+/// [`poll_next`](Stream::poll_next) is called (either directly or via
+/// [`crate::StreamExt::next`]) and returns [`Poll::Pending`], no values will be
+/// dropped if `poll_next` is not called again.
 #[must_use = "streams do nothing unless polled"]
 pub struct FuturesUnordered<Fut> {
     ready_to_run_queue: Arc<ReadyToRunQueue<Fut>>,