diff --git a/tests/optimizers/fs2000_5.mod b/tests/optimizers/fs2000_5.mod
index f7f9d22da..5025db529 100644
--- a/tests/optimizers/fs2000_5.mod
+++ b/tests/optimizers/fs2000_5.mod
@@ -2,3 +2,4 @@
 
 estimation(mode_compute=5,silent_optimizer,order=1, datafile='../fs2000/fsdat_simul', nobs=192, mh_replic=0);
 estimation(mode_compute=5,silent_optimizer,order=1, datafile='../fs2000/fsdat_simul', nobs=192, mh_replic=0, optim=('Hessian',2));
+estimation(mode_compute=5,silent_optimizer,order=1, datafile='../fs2000/fsdat_simul', nobs=192, mh_replic=0, optim=('Hessian',1,'robust',true));