diff --git a/dune/gfe/tensor3.hh b/dune/gfe/tensor3.hh
index f1a90deb4186e59b6d6145c1eae9eba3433e372a..05044357150797a387c4181979589b5308493d76 100644
--- a/dune/gfe/tensor3.hh
+++ b/dune/gfe/tensor3.hh
@@ -7,6 +7,7 @@
 
 #include <dune/common/array.hh>
 #include <dune/common/fmatrix.hh>
+#include <dune/common/static_assert.hh>
 
 /** \brief A third-rank tensor
 */
@@ -193,4 +194,4 @@ inline std::ostream& operator<< (std::ostream& s, const Tensor3<T,N1,N2,N3>& ten
 
 
 
-#endif
\ No newline at end of file
+#endif