diff --git a/weed/topology/topology_vacuum.go b/weed/topology/topology_vacuum.go
index 9d964489d..532029ac3 100644
--- a/weed/topology/topology_vacuum.go
+++ b/weed/topology/topology_vacuum.go
@@ -66,7 +66,8 @@ func batchVacuumVolumeCompact(grpcDialOption grpc.DialOption, vl *VolumeLayout,
 			glog.V(0).Infoln(index, "Start vacuuming", vid, "on", url)
 			err := operation.WithVolumeServerClient(url, grpcDialOption, func(volumeServerClient volume_server_pb.VolumeServerClient) error {
 				_, err := volumeServerClient.VacuumVolumeCompact(context.Background(), &volume_server_pb.VacuumVolumeCompactRequest{
-					VolumeId: uint32(vid),
+					VolumeId:    uint32(vid),
+					Preallocate: preallocate,
 				})
 				return err
 			})