diff --git a/README.md b/README.md
index bd3164b5a..f3d9da087 100644
--- a/README.md
+++ b/README.md
@@ -136,7 +136,7 @@ Currently supported platforms:
 * NetBSD
 * OpenBSD
 * Solaris
-* Windows (running under Wine is not supported, see [issue #1444])
+* Windows
 * iOS
 * macOS
 
@@ -153,6 +153,13 @@ This uses the Windows AFD system to access socket readiness events.
 [wepoll]: https://github.com/piscisaureus/wepoll
 [issue #1444]: https://github.com/tokio-rs/mio/issues/1444
 
+### Unsupported
+
+* Haiku, see [issue #1472]
+* Wine, see [issue #1444]
+
+[issue #1472]: https://github.com/tokio-rs/mio/issues/1472
+
 ## Community
 
 A group of Mio users hang out on [Discord], this can be a good place to go for
diff --git a/src/sys/unix/tcp.rs b/src/sys/unix/tcp.rs
index 73b3b30a0..8a8bcb606 100644
--- a/src/sys/unix/tcp.rs
+++ b/src/sys/unix/tcp.rs
@@ -9,7 +9,7 @@ use std::time::Duration;
 use crate::net::TcpKeepalive;
 use crate::sys::unix::net::{new_socket, socket_addr, to_socket_addr};
 
-#[cfg(any(target_os = "openbsd", target_os = "netbsd", target_os = "haiku"))]
+#[cfg(any(target_os = "openbsd", target_os = "netbsd"))]
 use libc::SO_KEEPALIVE as KEEPALIVE_TIME;
 #[cfg(any(target_os = "macos", target_os = "ios"))]
 use libc::TCP_KEEPALIVE as KEEPALIVE_TIME;
@@ -18,7 +18,6 @@ use libc::TCP_KEEPALIVE as KEEPALIVE_TIME;
     target_os = "ios",
     target_os = "openbsd",
     target_os = "netbsd",
-    target_os = "haiku"
 )))]
 use libc::TCP_KEEPIDLE as KEEPALIVE_TIME;
 pub type TcpSocket = libc::c_int;