diff --git a/consul/discovery.go b/consul/discovery.go
index 413b371..20499b0 100644
--- a/consul/discovery.go
+++ b/consul/discovery.go
@@ -120,7 +120,8 @@ func (s *Service) check() (bool, error) {
 
 func (s *Service) getMetadata() map[string]string {
 	m := map[string]string{}
-	m["traefik/http/services/"+s.Name+"/loadBalancer/servers/0/url"] = s.GetFullAddr()
+	key := fmt.Sprintf("traefik/http/services/%s/loadBalancer/servers/0/url", s.Name)
+	m[key] = s.GetFullAddr()
 
 	fmt.Printf("netadata: %v", m)