diff --git a/xcom-ultra/xcu-relay/src/lib.rs b/xcom-ultra/xcu-relay/src/lib.rs
index 3193695..a678f5c 100644
--- a/xcom-ultra/xcu-relay/src/lib.rs
+++ b/xcom-ultra/xcu-relay/src/lib.rs
@@ -14,7 +14,7 @@ impl std::fmt::Display for RelayError {
 impl std::error::Error for RelayError {}
 
 use std::collections::HashMap;
-use std::net::{IpAddr, Ipv4Addr};
+use std::net::IpAddr;
 
 #[derive(Debug, Clone, Copy)]
 pub struct SocketAddr { pub ip: IpAddr, pub port: u16 }
@@ -108,6 +108,7 @@ impl RelayServer {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use std::net::Ipv4Addr;
     #[test]
     fn test_stun() {
         let s = RelayServer::new(IpAddr::V4(Ipv4Addr::new(1,2,3,4)), 50000, 100);