diff --git a/http/sys_raft.go b/http/sys_raft.go
index 1dc4a1b46fa4..214c23a6f7fb 100644
--- a/http/sys_raft.go
+++ b/http/sys_raft.go
@@ -57,7 +57,7 @@ type JoinResponse struct {
 
 type JoinRequest struct {
 	LeaderAPIAddr    string `json:"leader_api_addr"`
-	LeaderCACert     string `json:"leader_ca_cert":`
+	LeaderCACert     string `json:"leader_ca_cert"`
 	LeaderClientCert string `json:"leader_client_cert"`
 	LeaderClientKey  string `json:"leader_client_key"`
 	Retry            bool   `json:"retry"`