diff --git a/config/config.go b/config/config.go
index 08a460d..baade65 100755
--- a/config/config.go
+++ b/config/config.go
@@ -38,7 +38,7 @@ func New() map[string]string {
 	if !strings.HasPrefix(conf["port"], ":") {
 		conf["port"] = ":" + conf["port"]
 	}
-	if len(conf["bypass"]) != 0 {
+	if len(conf["bypass"]) != 0 && len(conf["whitelist"]) != 0 {
 		conf["whitelist"] += ",," + conf["bypass"]
 	}
 	return conf