diff --git a/src/fd/socket/tcp.rs b/src/fd/socket/tcp.rs
index bfdec01513..bfed43c3a5 100644
--- a/src/fd/socket/tcp.rs
+++ b/src/fd/socket/tcp.rs
@@ -415,7 +415,6 @@ impl Socket {
 
 			let s = nic.get_mut_socket::<tcp::Socket<'_>>(handle);
 			s.set_nagle_enabled(nagle_enabled);
-			s.set_ack_delay(ack_delay);
 			s.listen(self.port)
 				.map(|_| ())
 				.map_err(|_| io::Error::EIO)?;
@@ -433,11 +432,6 @@ impl Socket {
 			for i in self.handle.iter() {
 				let socket = nic.get_mut_socket::<tcp::Socket<'_>>(*i);
 				socket.set_nagle_enabled(optval);
-				if optval {
-					socket.set_ack_delay(None);
-				} else {
-					socket.set_ack_delay(Some(Duration::from_millis(10)));
-				}
 			}
 
 			Ok(())