diff --git a/consul/discovery.go b/consul/discovery.go
index 35c174e..c2dedc4 100644
--- a/consul/discovery.go
+++ b/consul/discovery.go
@@ -154,7 +154,7 @@ func (s *Service) getTags() []string {
 		"traefik.http.services." + s.Name + ".loadbalancer.server.scheme=http",
 		"traefik.http.services." + s.Name + ".loadbalancer.server.port=" + strconv.Itoa(s.port),
 		"traefik.http.services." + s.Name + ".loadbalancer.passhostheader=false",
-		"traefik.http.middlewares.auth_" + s.Name + ".plugin.auth.handlerURL=" + config.GetEnv("AUTH_HANDLER_URL"),
+		"traefik.http.middlewares.auth_" + s.Name + ".plugin.auth.handlerURL=" + config.GetEnv("AUTH_HANDLER_URL", ""),
 		// "traefik.http.middlewares.auth_" + s.Name + ".forwardauth.authRequestHeaders=Cookie",
 		// "traefik.http.middlewares.auth_" + s.Name + ".forwardauth.authResponseHeaders=Set-Cookie, Server",
 		// "traefik.http.middlewares.auth_" + s.Name + ".forwardauth.trustForwardHeader=true",