diff --git a/api.go b/api.go
index 9c2c1fcdba..85c06bb26b 100644
--- a/api.go
+++ b/api.go
@@ -1094,7 +1094,7 @@ func ServeFd(addr string, handle http.Handler) error {
 
 	// Since ListenFD will return one or more sockets we have
 	// to create a go func to spawn off multiple serves
-	for i, _ := range ls {
+	for i := range ls {
 		listener := ls[i]
 		go func() {
 			httpSrv := http.Server{Handler: handle}