diff --git a/dune/istl/paamg/hierarchy.hh b/dune/istl/paamg/hierarchy.hh
index 49a41080048af6d791046997b0140f64698fa421..6401a49e04dbcdb55349cecb85aa2412eeb31300 100644
--- a/dune/istl/paamg/hierarchy.hh
+++ b/dune/istl/paamg/hierarchy.hh
@@ -815,7 +815,7 @@ namespace Dune
             }
         }
 #endif
-        if(info->communicator().rank()==0)
+        if(criterion.debugLevel()>1 && info->communicator().rank()==0)
           std::cout<<"aggregating finished."<<std::endl;
 
         BIGINT gnoAggregates=noAggregates;