diff --git a/crates/shadowsocks/src/net/sys/unix/bsd/freebsd.rs b/crates/shadowsocks/src/net/sys/unix/bsd/freebsd.rs
index 61ad111bebb3..85983a86b09e 100644
--- a/crates/shadowsocks/src/net/sys/unix/bsd/freebsd.rs
+++ b/crates/shadowsocks/src/net/sys/unix/bsd/freebsd.rs
@@ -237,7 +237,7 @@ pub async fn create_outbound_udp_socket(af: AddrFamily, config: &ConnectOpts) ->
 }
 
 /// Create a `UdpSocket` binded to `bind_addr`
-pub async fn bind_outbound_udp_socket(bind_addr: &SocketAddr, _config: &ConnectOpts) -> io::Result<UdpSocket> {
+pub async fn bind_outbound_udp_socket(bind_addr: &SocketAddr, config: &ConnectOpts) -> io::Result<UdpSocket> {
     let af = AddrFamily::from(bind_addr);
 
     let socket = if af != AddrFamily::Ipv6 {