diff --git a/dune/gfe/tensor3.hh b/dune/gfe/tensor3.hh
index 28598fc8c9040d7ed1696e574379dfe34d25f4ea..11dc9b2407b920386e58f7507bdf874cf0f9cb99 100644
--- a/dune/gfe/tensor3.hh
+++ b/dune/gfe/tensor3.hh
@@ -4,6 +4,9 @@
 /** \file
     \brief A third-rank tensor
     */
+
+#include <dune/common/array.hh>
+#include <dune/common/fmatrix.hh>
     
 template <class T, int N1, int N2, int N3>
 class Tensor3