diff --git a/amdis/gridfunctions/CoordsGridFunction.hpp b/amdis/gridfunctions/CoordsGridFunction.hpp
index 2512f186d7c15f38529659e45917271b496110fb..00a1925763d6eba43abaa62c59a097d792350f6d 100644
--- a/amdis/gridfunctions/CoordsGridFunction.hpp
+++ b/amdis/gridfunctions/CoordsGridFunction.hpp
@@ -46,7 +46,7 @@ namespace AMDiS
         template <class T, int N>
         Dune::DiagonalMatrix<T, N> operator()(Dune::FieldVector<T, N> const& /*x*/) const
         {
-          return Dune::DiagonalMatrix<T,N>{T(1)};
+          return Dune::DiagonalMatrix<T,N>(T(1));
         }
       };
       friend Derivative derivativeOf(CoordsFunction const& /*f*/, tag::gradient)