diff --git a/weed/topology/data_node.go b/weed/topology/data_node.go
index 05842f33e..bf9557ca0 100644
--- a/weed/topology/data_node.go
+++ b/weed/topology/data_node.go
@@ -193,8 +193,7 @@ func (dn *DataNode) ToMap() interface{} {
 	ret["Volumes"] = dn.GetVolumeCount() + dn.GetSsdVolumeCount()
 	ret["VolumeIds"] = dn.GetVolumeIds()
 	ret["EcShards"] = dn.GetEcShardCount()
-	ret["Max"] = dn.GetMaxVolumeCount()
-	ret["MaxSsd"] = dn.GetMaxSsdVolumeCount()
+	ret["Max"] = dn.GetMaxVolumeCount() + dn.GetMaxSsdVolumeCount()
 	ret["Free"] = dn.FreeSpace()
 	ret["PublicUrl"] = dn.PublicUrl
 	return ret
diff --git a/weed/topology/topology_map.go b/weed/topology/topology_map.go
index eb8990ab2..566fa418f 100644
--- a/weed/topology/topology_map.go
+++ b/weed/topology/topology_map.go
@@ -4,8 +4,7 @@ import "github.com/chrislusf/seaweedfs/weed/pb/master_pb"
 
 func (t *Topology) ToMap() interface{} {
 	m := make(map[string]interface{})
-	m["Max"] = t.GetMaxVolumeCount()
-	m["MaxSsd"] = t.GetMaxSsdVolumeCount()
+	m["Max"] = t.GetMaxVolumeCount() + t.GetMaxSsdVolumeCount()
 	m["Free"] = t.FreeSpace()
 	var dcs []interface{}
 	for _, c := range t.Children() {
@@ -30,8 +29,7 @@ func (t *Topology) ToMap() interface{} {
 
 func (t *Topology) ToVolumeMap() interface{} {
 	m := make(map[string]interface{})
-	m["Max"] = t.GetMaxVolumeCount()
-	m["MaxSsd"] = t.GetMaxSsdVolumeCount()
+	m["Max"] = t.GetMaxVolumeCount() + t.GetMaxSsdVolumeCount()
 	m["Free"] = t.FreeSpace()
 	dcs := make(map[NodeId]interface{})
 	for _, c := range t.Children() {