diff --git a/spot/tl/hierarchy.cc b/spot/tl/hierarchy.cc
index 0d010796d..4ed8e4506 100644
--- a/spot/tl/hierarchy.cc
+++ b/spot/tl/hierarchy.cc
@@ -41,8 +41,7 @@ namespace spot
       // BA will preserve determinism if possible.
       spot::postprocessor p;
       p.set_type(spot::postprocessor::Generic);
-      p.set_pref(spot::postprocessor::Deterministic
-                 | spot::postprocessor::SBAcc);
+      p.set_pref(spot::postprocessor::Deterministic);
       p.set_level(spot::postprocessor::Low);
       auto dra = p.run(aut);
       if (dra->acc().is_generalized_buchi())