diff --git a/irc/net.go b/irc/net.go
index e835ab6d..1fcc6d5d 100644
--- a/irc/net.go
+++ b/irc/net.go
@@ -71,6 +71,10 @@ func LookupHostname(addr net.Addr) string {
 	if err != nil {
 		return addrStr
 	}
+	switch ipaddr {
+	case "127.0.0.1", "::1":
+		return "localhost"
+	}
 	names, err := net.LookupHost(ipaddr)
 	if err != nil {
 		return ipaddr