diff --git a/src/Determinants/save_natorb.irp.f b/src/Determinants/save_natorb.irp.f
index 674ba32e..254bd1d3 100644
--- a/src/Determinants/save_natorb.irp.f
+++ b/src/Determinants/save_natorb.irp.f
@@ -3,5 +3,7 @@ program save_natorb
   touch read_wf
   call save_natural_mos
   call save_ref_determinant
+  call ezfio_set_integrals_bielec_disk_access_mo_integrals('None')
+  call ezfio_set_integrals_monoelec_disk_access_mo_one_integrals('None')
 end