diff --git a/dune/tectonic/ellipticenergy.hh b/dune/tectonic/ellipticenergy.hh
index 876df28cc6e8d4cfe70a35ef8e6685503284fb28..c00776ceb3a6357c05fd62e4eaba080b1e580616 100644
--- a/dune/tectonic/ellipticenergy.hh
+++ b/dune/tectonic/ellipticenergy.hh
@@ -28,8 +28,6 @@ template <size_t dim> class EllipticEnergy {
   LocalMatrix const &A;
   LocalVector const &b;
   std::shared_ptr<Nonlinearity const> const phi;
-  /* Dimension that should be ignored; goes from 0 to dim-1; the
-     special value dim means that no dimension should be ignored */
   typename Dune::BitSetVector<dim>::const_reference const ignore;
 
   void gradient(LocalVector const &x, LocalVector &y) const {