diff --git a/nifty_gridder.cc b/nifty_gridder.cc
index 65673b2a37e963523a2ec883d4387f084220cedb..92b275f04baccf73cbb184e82ac05b63ec760614 100644
--- a/nifty_gridder.cc
+++ b/nifty_gridder.cc
@@ -1490,6 +1490,7 @@ PYBIND11_MODULE(nifty_gridder, m)
     .def("Pixsize_y", &GridderConfig<double>::Pixsize_y)
     .def("Nu", &GridderConfig<double>::Nu)
     .def("Nv", &GridderConfig<double>::Nv)
+    .def("W", &GridderConfig<double>::W)
     .def("apply_taper", &GridderConfig<double>::apply_taper, apply_taper_DS,
       "img"_a, "divide"_a=false)
     .def("grid2dirty", &GridderConfig<double>::grid2dirty,