@@ -1,11 +1,17 @@
 package server
 
 import (
+	"net"
+	"strconv"
+
 	"go.alanpearce.eu/x/listenfd"
 )
 
 func (s *Server) serveTCP() error {
-	l, err := listenfd.GetListener(0, s.Addr, s.log.Named("tcp.listenfd"))
+	l, err := listenfd.GetListener(0,
+		net.JoinHostPort(s.runtimeConfig.ListenAddress, strconv.Itoa(s.runtimeConfig.Port)),
+		s.log.Named("tcp.listenfd"),
+	)
 	if err != nil {
 		return err
 	}