diff --git a/dune/gfe/realtuple.hh b/dune/gfe/realtuple.hh
index c6a09dac495a7044feb97a5c5b90d9f57a28293d..e09f84be24722a76c7c5934c4091c3a81a80314f 100644
--- a/dune/gfe/realtuple.hh
+++ b/dune/gfe/realtuple.hh
@@ -3,6 +3,7 @@
 
 #include <dune/common/array.hh>
 #include <dune/common/fvector.hh>
+#include <dune/gfe/tensor3.hh>
 
 
 /** \brief Implement a tuple of real numbers as a Riemannian manifold