diff --git a/python/dune/gdt/gamm-2019-talk-on-conservative-rb.cc b/python/dune/gdt/gamm-2019-talk-on-conservative-rb.cc
index 76c606a9206db8fcf38e88a5f8aebdf140a8a4c7..88142231942fe60208b7e3cbb449f835a165eb3d 100644
--- a/python/dune/gdt/gamm-2019-talk-on-conservative-rb.cc
+++ b/python/dune/gdt/gamm-2019-talk-on-conservative-rb.cc
@@ -309,6 +309,7 @@ PYBIND11_MODULE(gamm_2019_talk_on_conservative_rb, m)
   py::module::import("dune.xt.la");
   py::module::import("dune.xt.grid");
   py::module::import("dune.xt.functions");
+  py::module::import("dune.gdt.discretefunction");
 
   m.def("visualize",
         [](GP& grid, XT::Functions::FunctionInterface<d>& func, const std::string& filename) {