1.1 --- a/src/lemon/preflow.h	Wed Nov 10 19:59:14 2004 +0000
     1.2 +++ b/src/lemon/preflow.h	Wed Nov 10 20:14:32 2004 +0000
     1.3 @@ -22,6 +22,7 @@
     1.4  
     1.5  #include <lemon/invalid.h>
     1.6  #include <lemon/maps.h>
     1.7 +#include <lemon/graph_utils.h>
     1.8  
     1.9  /// \file
    1.10  /// \ingroup flowalgs