diff --git a/matlab/gsa/stab_map_.m b/matlab/gsa/stab_map_.m
index 2f51a1170..7458836b5 100644
--- a/matlab/gsa/stab_map_.m
+++ b/matlab/gsa/stab_map_.m
@@ -130,7 +130,6 @@ options_.periods=0;
 options_.nomoments=1;
 options_.irf=0;
 options_.noprint=1;
-options_.simul=0;
 if fload==0,
     %   if prepSA
     %     T=zeros(size(dr_.ghx,1),size(dr_.ghx,2)+size(dr_.ghu,2),Nsam/2);
@@ -660,9 +659,7 @@ if isfield(opt,'nomoments'),
 end
 options_.irf=opt.irf;
 options_.noprint=opt.noprint;
-if isfield(opt,'simul'),
-    options_.simul=opt.simul;
-end
+