diff --git a/matlab/select_qz_criterium_value.m b/matlab/select_qz_criterium_value.m
index b2e4225ea1aff9c9798a15b5991ad4d666301daf..26fc475720b34f54592eaef2c4ae37ca884b7a0a 100644
--- a/matlab/select_qz_criterium_value.m
+++ b/matlab/select_qz_criterium_value.m
@@ -47,6 +47,10 @@ if options_.particle.status
                 options_.qz_criterium = 1+1e-6;
             end
         end
+    else
+        if isempty(options_.qz_criterium)
+            options_.qz_criterium = 1-1e-6;
+        end
     end
 else
     % Linear filter