1.1 --- a/src/lemon/dimacs.h	Fri Mar 04 17:12:36 2005 +0000
     1.2 +++ b/src/lemon/dimacs.h	Fri Mar 04 17:13:40 2005 +0000
     1.3 @@ -21,6 +21,7 @@
     1.4  #include <string>
     1.5  #include <vector>
     1.6  #include <lemon/maps.h>
     1.7 +#include <lemon/invalid.h>
     1.8  
     1.9  /// \ingroup misc
    1.10  /// \file