diff --git a/dune/stuff/function/interface.hh b/dune/stuff/function/interface.hh
index 1d32f16aa25ac50f8c613904240aab42b58f85b8..ebdc3d5b7ed349eb280750cdeec4c19145161dab 100644
--- a/dune/stuff/function/interface.hh
+++ b/dune/stuff/function/interface.hh
@@ -165,4 +165,6 @@ public:
 } // namespace Stuff
 } // namespace Dune
 
+#include "parametric/separable/coefficient.hh"
+
 #endif // DUNE_STUFF_FUNCTION_INTERFACE_HH