diff --git a/src/common/vecbuf.rs b/src/common/vecbuf.rs
index dd40163..81bec86 100644
--- a/src/common/vecbuf.rs
+++ b/src/common/vecbuf.rs
@@ -48,7 +48,7 @@ impl<'a, 'b> Buf for VecBuf<'a, 'b> {
         }
     }
 
-    #[allow(needless_range_loop)]
+    #[cfg_attr(feature = "cargo-clippy", allow(needless_range_loop))]
     fn bytes_vec<'c>(&'c self, dst: &mut [&'c IoVec]) -> usize {
         let len = cmp::min(self.inner.len() - self.pos, dst.len());
 
diff --git a/src/tokio_impl.rs b/src/tokio_impl.rs
index 9f09705..e3fd4d5 100644
--- a/src/tokio_impl.rs
+++ b/src/tokio_impl.rs
@@ -52,7 +52,11 @@ impl<S, C> AsyncRead for TlsStream<S, C>
     where
         S: AsyncRead + AsyncWrite,
         C: Session
-{}
+{
+    unsafe fn prepare_uninitialized_buffer(&self, _: &mut [u8]) -> bool {
+        false
+    }
+}
 
 impl<S, C> AsyncWrite for TlsStream<S, C>
     where