diff --git a/futures-util/src/sink/feed.rs b/futures-util/src/sink/feed.rs
index db660b89da..117a3cdee0 100644
--- a/futures-util/src/sink/feed.rs
+++ b/futures-util/src/sink/feed.rs
@@ -1,5 +1,5 @@
 use core::pin::Pin;
-use futures_core::future::{Future, FusedFuture};
+use futures_core::future::Future;
 use futures_core::task::{Context, Poll};
 use futures_sink::Sink;
 
@@ -25,6 +25,10 @@ impl<'a, Si: Sink<Item> + Unpin + ?Sized, Item> Feed<'a, Si, Item> {
     pub(super) fn sink_pin_mut(&mut self) -> Pin<&mut Si> {
         Pin::new(self.sink)
     }
+
+    pub(super) fn is_item_pending(&self) -> bool {
+        self.item.is_some()
+    }
 }
 
 impl<Si: Sink<Item> + Unpin + ?Sized, Item> Future for Feed<'_, Si, Item> {
@@ -42,9 +46,3 @@ impl<Si: Sink<Item> + Unpin + ?Sized, Item> Future for Feed<'_, Si, Item> {
         Poll::Ready(Ok(()))
     }
 }
-
-impl<Si: Sink<Item> + Unpin + ?Sized, Item> FusedFuture for Feed<'_, Si, Item> {
-    fn is_terminated(&self) -> bool {
-        self.item.is_none()
-    }
-}
diff --git a/futures-util/src/sink/feed_all.rs b/futures-util/src/sink/feed_all.rs
index 899b79824d..303cafb814 100644
--- a/futures-util/src/sink/feed_all.rs
+++ b/futures-util/src/sink/feed_all.rs
@@ -1,8 +1,8 @@
 use crate::stream::TryStreamExt;
 use core::fmt;
 use core::pin::Pin;
-use futures_core::future::{Future, FusedFuture};
-use futures_core::stream::{TryStream, Stream, FusedStream};
+use futures_core::future::Future;
+use futures_core::stream::{TryStream, Stream};
 use futures_core::task::{Context, Poll};
 use futures_sink::Sink;
 
@@ -113,13 +113,3 @@ where
         }
     }
 }
-
-impl<Si, St, Ok, Error> FusedFuture for FeedAll<'_, Si, St>
-where
-    Si: Sink<Ok, Error = Error> + Unpin + ?Sized,
-    St: Stream<Item = Result<Ok, Error>> + FusedStream + Unpin + ?Sized,
-{
-    fn is_terminated(&self) -> bool {
-        self.buffered.is_none() && self.stream.is_terminated()
-    }
-}
diff --git a/futures-util/src/sink/send.rs b/futures-util/src/sink/send.rs
index 860f24d8f2..287bd5a378 100644
--- a/futures-util/src/sink/send.rs
+++ b/futures-util/src/sink/send.rs
@@ -1,6 +1,6 @@
 use super::Feed;
 use core::pin::Pin;
-use futures_core::future::{Future, FusedFuture};
+use futures_core::future::Future;
 use futures_core::task::{Context, Poll};
 use futures_sink::Sink;
 
@@ -30,8 +30,10 @@ impl<Si: Sink<Item> + Unpin + ?Sized, Item> Future for Send<'_, Si, Item> {
         cx: &mut Context<'_>,
     ) -> Poll<Self::Output> {
         let this = &mut *self;
-        if !this.feed.is_terminated() {
+
+        if this.feed.is_item_pending() {
             ready!(Pin::new(&mut this.feed).poll(cx))?;
+            debug_assert!(!this.feed.is_item_pending());
         }
 
         // we're done sending the item, but want to block on flushing the