1.1 --- a/lemon/concepts/digraph.h	Tue Jul 15 18:43:41 2008 +0100
     1.2 +++ b/lemon/concepts/digraph.h	Tue Jul 15 18:49:30 2008 +0100
     1.3 @@ -23,8 +23,7 @@
     1.4  ///\file
     1.5  ///\brief The concept of directed graphs.
     1.6  
     1.7 -#include <lemon/bits/invalid.h>
     1.8 -#include <lemon/bits/utility.h>
     1.9 +#include <lemon/core.h>
    1.10  #include <lemon/concepts/maps.h>
    1.11  #include <lemon/concept_check.h>
    1.12  #include <lemon/concepts/graph_components.h>