diff --git a/discovery/token/README.md b/discovery/token/README.md
index 78d6cc7f2c..8088169f1d 100644
--- a/discovery/token/README.md
+++ b/discovery/token/README.md
@@ -10,11 +10,11 @@ The discovery service is still in alpha stage and currently hosted at `https://d
 `<- <token>`
 
 #####Add new nodes to a cluster
-`-> POST https://discovery-stage.hub.docker.com/v1/clusters/<token> Request body: "<ip>:<port1>"`
+`-> POST https://discovery-stage.hub.docker.com/v1/clusters/<token>?ttl=<ttl> Request body: "<ip>:<port1>"`
 
 `<- OK`
 
-`-> POST https://discovery-stage.hub.docker.com/v1/clusters/<token> Request body: "<ip>:<port2>")`
+`-> POST https://discovery-stage.hub.docker.com/v1/clusters/<token>?ttl=<ttl> Request body: "<ip>:<port2>")`
 
 `<- OK`
 
diff --git a/discovery/token/token.go b/discovery/token/token.go
index 71f03b7179..455b43565e 100644
--- a/discovery/token/token.go
+++ b/discovery/token/token.go
@@ -119,8 +119,8 @@ func (s *Discovery) Watch(stopCh <-chan struct{}) (<-chan discovery.Entries, <-c
 func (s *Discovery) Register(addr string) error {
 	buf := strings.NewReader(addr)
 
-	resp, err := http.Post(fmt.Sprintf("%s/%s/%s", s.url,
-		"clusters", s.token), "application/json", buf)
+	resp, err := http.Post(fmt.Sprintf("%s/%s/%s?ttl=%d", s.url,
+		"clusters", s.token, uint64(s.ttl.Seconds())), "application/json", buf)
 
 	if err != nil {
 		return err