diff --git a/src/mo_optimization/EZFIO.cfg b/src/mo_optimization/EZFIO.cfg
index e6aa2d67..078da3a2 100644
--- a/src/mo_optimization/EZFIO.cfg
+++ b/src/mo_optimization/EZFIO.cfg
@@ -2,7 +2,7 @@
 type: character*(32)
 doc: Define the kind of hessian for the orbital optimization full : full hessian, diag : diagonal hessian, none : no hessian
 interface: ezfio,provider,ocaml
-default: full
+default: diag
 
 [n_det_max_opt]
 type: integer
@@ -14,7 +14,7 @@ default: 200000
 type: integer
 doc: Maximal number of iterations for the orbital optimization
 interface: ezfio,provider,ocaml
-default: 20
+default: 10
 
 [thresh_opt_max_elem_grad]
 type: double precision