diff --git a/src/io.f90 b/src/io.f90
index 5ee7c7d..cd3e3f6 100644
--- a/src/io.f90
+++ b/src/io.f90
@@ -774,7 +774,7 @@ module io
         real(kind = dp), dimension(6), intent(out) :: temp_box_bd
 
         integer :: i, inod, ibasis, j, k, in_eles, in_atoms, ele_types, in_lat_num, in_atom_types, &
-                   atom_type_map(10), etype_map(10), etype, lat_type, new_lattice_map(10), &
+                   atom_type_map(100), etype_map(100), etype, lat_type, new_lattice_map(100), &
                    atom_type
         real(kind=dp) :: newdisplace(3), r_in(3,1,8), r_in_atom(3), new_displace(3)
         character(len=100) :: textholder, in_lattype_map(10)