diff --git a/proxy/proxy.go b/proxy/proxy.go
index 57649795..3d5cd1d2 100644
--- a/proxy/proxy.go
+++ b/proxy/proxy.go
@@ -548,7 +548,7 @@ func UnwrapRawConn(conn net.Conn) (net.Conn, stats.Counter, stats.Counter) {
 			// 8192 > 4096, there is no need to process pc's bufReader
 		}
 		if uc, ok := conn.(*internet.UDSWrapperConn); ok {
-			conn = uc.Conn
+			conn = uc.UnixConn
 		}
 	}
 	return conn, readCounter, writerCounter
diff --git a/transport/internet/system_listener.go b/transport/internet/system_listener.go
index 1086aef5..e61a1bd2 100644
--- a/transport/internet/system_listener.go
+++ b/transport/internet/system_listener.go
@@ -54,7 +54,7 @@ func (l *listenUDSWrapper) Accept() (net.Conn, error) {
 	if err != nil {
 		return nil, err
 	}
-	return &UDSWrapperConn{Conn: conn}, nil
+	return &UDSWrapperConn{UnixConn: conn.(*net.UnixConn)}, nil
 }
 
 func (l *listenUDSWrapper) Close() error {
@@ -66,7 +66,7 @@ func (l *listenUDSWrapper) Close() error {
 }
 
 type UDSWrapperConn struct {
-	net.Conn
+	*net.UnixConn
 }
 
 func (conn *UDSWrapperConn) RemoteAddr() net.Addr {