diff --git a/src/h5/h5_private.h b/src/h5/h5_private.h
index f445a25..f091e68 100644
--- a/src/h5/h5_private.h
+++ b/src/h5/h5_private.h
@@ -12,6 +12,7 @@
 #define H5T_VMESH_GRPNAME		"VOLUME_MESH"
 #define H5T_TETMESH_DSNAME		"TETMESH"
 #define H5T_TETMESH_NUM_ELEMS_DSNAME	"TETMESH_NUM_ELEMS"
+#define H5T_TETMESH_NUM_ELEMS_ON_LEVEL_DSNAME	"TETMESH_NUM_ELEMS_ON_LEVEL"
 
 #define H5BLOCK_GROUPNAME_BLOCK	H5B_CONTAINER_GRPNAME