diff --git a/ctl/operation/clusters.go b/ctl/operation/clusters.go
index ad5a1df0ee..41c9d59e0f 100644
--- a/ctl/operation/clusters.go
+++ b/ctl/operation/clusters.go
@@ -44,14 +44,14 @@ type ClusterResponse struct {
 }
 
 type DiagnoseShardStatus struct {
-	NodeName string `json:"node_name"`
+	NodeName string `json:"nodeName"`
 	Status   string `json:"status"`
 }
 
 type DiagnoseShardResponse struct {
 	// shardID -> nodeName
-	UnregisteredShards []uint32                       `json:"unregistered_shards"`
-	UnreadyShards      map[uint32]DiagnoseShardStatus `json:"unready_shards"`
+	UnregisteredShards []uint32                       `json:"unregisteredShards"`
+	UnreadyShards      map[uint32]DiagnoseShardStatus `json:"unreadyShards"`
 }
 
 func clusterUrl() string {
diff --git a/horaemeta/server/service/http/types.go b/horaemeta/server/service/http/types.go
index 2d17652d57..183257eb1a 100644
--- a/horaemeta/server/service/http/types.go
+++ b/horaemeta/server/service/http/types.go
@@ -80,14 +80,14 @@ type API struct {
 }
 
 type DiagnoseShardStatus struct {
-	NodeName string `json:"node_name"`
+	NodeName string `json:"nodeName"`
 	Status   string `json:"status"`
 }
 
 type DiagnoseShardResult struct {
 	// shardID -> nodeName
-	UnregisteredShards []storage.ShardID                       `json:"unregistered_shards"`
-	UnreadyShards      map[storage.ShardID]DiagnoseShardStatus `json:"unready_shards"`
+	UnregisteredShards []storage.ShardID                       `json:"unregisteredShards"`
+	UnreadyShards      map[storage.ShardID]DiagnoseShardStatus `json:"unreadyShards"`
 }
 
 type QueryTableRequest struct {