diff --git a/matlab/gsa/stab_map_.m b/matlab/gsa/stab_map_.m
index 766963a05..8ed41f6e7 100644
--- a/matlab/gsa/stab_map_.m
+++ b/matlab/gsa/stab_map_.m
@@ -696,7 +696,7 @@ else
 end
 
 xparam1=x0;
-save prior_ok.mat xparam1;
+save([OutputDirectoryName filesep 'prior_ok.mat'],'xparam1');
 
 options_.periods=opt.periods;
 if isfield(opt,'nomoments')