diff --git a/src/main.rs b/src/main.rs
index 991bbb9..642c80a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,7 +1,5 @@
-use clap;
 use std::fmt;
-use std::net::{IpAddr, Ipv4Addr, SocketAddr, UdpSocket};
-use std::ops::Index;
+use std::net::{IpAddr, UdpSocket};
 
 use crc32fast::hash;
 use log::warn;
@@ -74,7 +72,7 @@ impl TxId {
 
         let fp = fingerprint(&buf);
         buf.extend(ATTR_NUM_FINGERPRINT.to_be_bytes());
-        buf.extend((4 as u16).to_be_bytes());
+        buf.extend(4_u16.to_be_bytes());
         buf.extend(&fp.to_be_bytes());
 
         buf