diff --git a/src/tostream.rs b/src/tostream.rs
index 2d52c3f..34b0830 100644
--- a/src/tostream.rs
+++ b/src/tostream.rs
@@ -6,11 +6,20 @@ use std::io::Error;
 
 struct ToStream<T>(T);
 
+impl<T> ToStream<T> {
+    fn get_field(self: Pin<&mut Self>) -> Pin<&mut T> {
+        unsafe { self.map_unchecked_mut(|s| &mut s.0) }
+    }
+}
+
+impl <T : Unpin> Unpin for ToStream<T>{}
+
 impl <T : AsyncRead> Stream for ToStream<T>{
     type Item = Result<Bytes, Error>;
 
     fn poll_next(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
         let mut buff: [u8; 1024] = [0; 1024];
-        self.0.poll_read(cx, &mut buff[..]).map_ok(|l| {Bytes::copy_from_slice(&buff[0..l])}) // il manque Option
+        let mut t = self.get_field();
+        t.poll_read(cx, &mut buff[..]).map_ok(|l| {Bytes::copy_from_slice(&buff[0..l])}).map(|res| Some(res))
     }
 }
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