diff --git a/futures-core/src/stream.rs b/futures-core/src/stream.rs
index 37c60c9c6b..1f0f9a6e45 100644
--- a/futures-core/src/stream.rs
+++ b/futures-core/src/stream.rs
@@ -214,22 +214,6 @@ mod if_alloc {
         }
     }
 
-    impl<T: Unpin> Stream for alloc::collections::VecDeque<T> {
-        type Item = T;
-
-        fn poll_next(
-            mut self: Pin<&mut Self>,
-            _cx: &mut Context<'_>,
-        ) -> Poll<Option<Self::Item>> {
-            Poll::Ready(self.pop_front())
-        }
-
-        fn size_hint(&self) -> (usize, Option<usize>) {
-            let len = self.len();
-            (len, Some(len))
-        }
-    }
-
     #[cfg(feature = "std")]
     impl<S: Stream> Stream for std::panic::AssertUnwindSafe<S> {
         type Item = S::Item;
diff --git a/futures-util/src/sink/mod.rs b/futures-util/src/sink/mod.rs
index c35a48f180..3bf5eb7206 100644
--- a/futures-util/src/sink/mod.rs
+++ b/futures-util/src/sink/mod.rs
@@ -93,13 +93,12 @@ pub trait SinkExt<Item>: Sink<Item> {
     /// # futures::executor::block_on(async {
     /// use futures::channel::mpsc;
     /// use futures::sink::SinkExt;
-    /// use futures::stream::StreamExt;
-    /// use std::collections::VecDeque;
+    /// use futures::stream::{self, StreamExt};
     ///
     /// let (tx, rx) = mpsc::channel(5);
     ///
     /// let mut tx = tx.with_flat_map(|x| {
-    ///     VecDeque::from(vec![Ok(42); x])
+    ///     stream::iter(vec![Ok(42); x])
     /// });
     ///
     /// tx.send(5).await.unwrap();