diff --git a/dumux/discretization/facecentered/staggered/normalaxis.hh b/dumux/discretization/facecentered/staggered/normalaxis.hh index d45f12c1220c4ecf2a2a4976860d010139316958..6f627a3db03807f8c9cf87a3b269d15aafe1a580 100644 --- a/dumux/discretization/facecentered/staggered/normalaxis.hh +++ b/dumux/discretization/facecentered/staggered/normalaxis.hh @@ -26,6 +26,7 @@ #include <cstddef> #include <algorithm> +#include <numeric> namespace Dumux {