diff --git a/types/etcd.go b/types/etcd.go
index 837eb42..ece4a8a 100644
--- a/types/etcd.go
+++ b/types/etcd.go
@@ -2,11 +2,11 @@ package types
 
 type Etcd struct {
 	Endpoints []string `json:"Endpoints"`
-	Tls       EtcdTls  `json:"Tls"`
+	Tls       EtcdTls  `json:"Tls,optional"`
 }
 
 type EtcdTls struct {
-	Ca      string `json:"Ca"`
-	Cert    string `json:"Cert"`
-	CertKey string `json:"CertKey" `
+	Ca      string `json:"Ca,optional"`
+	Cert    string `json:"Cert,optional"`
+	CertKey string `json:"CertKey,optional" `
 }