diff --git a/weed/command/master.go b/weed/command/master.go
index 0f5e2156d..bed55e334 100644
--- a/weed/command/master.go
+++ b/weed/command/master.go
@@ -198,7 +198,7 @@ func (m *MasterOptions) toMasterOption(whiteList []string) *weed_server.MasterOp
 		Host:              *m.ip,
 		Port:              *m.port,
 		MetaFolder:        *m.metaFolder,
-		VolumeSizeLimitMB: *m.volumeSizeLimitMB,
+		VolumeSizeLimitMB: uint32(*m.volumeSizeLimitMB),
 		VolumePreallocate: *m.volumePreallocate,
 		// PulseSeconds:            *m.pulseSeconds,
 		DefaultReplicaPlacement: *m.defaultReplication,
diff --git a/weed/server/master_grpc_server.go b/weed/server/master_grpc_server.go
index 50c9dbfdf..166432c28 100644
--- a/weed/server/master_grpc_server.go
+++ b/weed/server/master_grpc_server.go
@@ -313,6 +313,8 @@ func (ms *MasterServer) GetMasterConfiguration(ctx context.Context, req *master_
 		MetricsIntervalSeconds: uint32(ms.option.MetricsIntervalSec),
 		StorageBackends:        backend.ToPbStorageBackends(),
 		DefaultReplication:     ms.option.DefaultReplicaPlacement,
+		VolumeSizeLimitMB:      uint32(ms.option.VolumeSizeLimitMB),
+		VolumePreallocate:      ms.option.VolumePreallocate,
 		Leader:                 leader,
 	}
 
diff --git a/weed/server/master_server.go b/weed/server/master_server.go
index eab41524c..273d6ba7d 100644
--- a/weed/server/master_server.go
+++ b/weed/server/master_server.go
@@ -35,7 +35,7 @@ type MasterOption struct {
 	Host              string
 	Port              int
 	MetaFolder        string
-	VolumeSizeLimitMB uint
+	VolumeSizeLimitMB uint32
 	VolumePreallocate bool
 	// PulseSeconds            int
 	DefaultReplicaPlacement string
diff --git a/weed/server/master_server_handlers_ui.go b/weed/server/master_server_handlers_ui.go
index 3822c6113..015bfbd00 100644
--- a/weed/server/master_server_handlers_ui.go
+++ b/weed/server/master_server_handlers_ui.go
@@ -19,7 +19,7 @@ func (ms *MasterServer) uiStatusHandler(w http.ResponseWriter, r *http.Request)
 		RaftServer        raft.Server
 		Stats             map[string]interface{}
 		Counters          *stats.ServerStats
-		VolumeSizeLimitMB uint
+		VolumeSizeLimitMB uint32
 	}{
 		util.Version(),
 		ms.Topo.ToMap(),