diff --git a/src/Base/MultiFab.cpp b/src/Base/MultiFab.cpp
index 8e145f52..cb0344b8 100644
--- a/src/Base/MultiFab.cpp
+++ b/src/Base/MultiFab.cpp
@@ -134,12 +134,12 @@ void init_MultiFab(py::module &m)
         .def("sum_boundary", py::overload_cast< int, int, Periodicity const & >(&FabArray<FArrayBox>::SumBoundary))
         .def("sum_boundary", py::overload_cast< int, int, IntVect const&, Periodicity const & >(&FabArray<FArrayBox>::SumBoundary))
 
-        .def("fill_boundary", py::overload_cast< bool >(&FabArray<FArrayBox>::template FillBoundary<Real>))
-        .def("fill_boundary", py::overload_cast< Periodicity const &, bool >(&FabArray<FArrayBox>::template FillBoundary<Real>))
-        .def("fill_boundary", py::overload_cast< IntVect const &, Periodicity const &, bool >(&FabArray<FArrayBox>::template FillBoundary<Real>))
-        .def("fill_boundary", py::overload_cast< int, int, bool >(&FabArray<FArrayBox>::template FillBoundary<Real>))
-        .def("fill_boundary", py::overload_cast< int, int, Periodicity const &, bool >(&FabArray<FArrayBox>::template FillBoundary<Real>))
-        .def("fill_boundary", py::overload_cast< int, int, IntVect const &, Periodicity const &, bool >(&FabArray<FArrayBox>::template FillBoundary<Real>))
+        .def("fill_boundary", py::overload_cast< bool >(&FabArray<FArrayBox>::template FillBoundary<Real>), py::arg("cross")=false)
+        .def("fill_boundary", py::overload_cast< Periodicity const &, bool >(&FabArray<FArrayBox>::template FillBoundary<Real>), py::arg("period"), py::arg("cross")=false)
+        .def("fill_boundary", py::overload_cast< IntVect const &, Periodicity const &, bool >(&FabArray<FArrayBox>::template FillBoundary<Real>), py::arg("nghost"), py::arg("period"), py::arg("cross")=false)
+        .def("fill_boundary", py::overload_cast< int, int, bool >(&FabArray<FArrayBox>::template FillBoundary<Real>), py::arg("scomp"), py::arg("ncomp"), py::arg("cross")=false)
+        .def("fill_boundary", py::overload_cast< int, int, Periodicity const &, bool >(&FabArray<FArrayBox>::template FillBoundary<Real>), py::arg("scomp"), py::arg("ncomp"), py::arg("period"), py::arg("cross")=false)
+        .def("fill_boundary", py::overload_cast< int, int, IntVect const &, Periodicity const &, bool >(&FabArray<FArrayBox>::template FillBoundary<Real>),  py::arg("scomp"), py::arg("ncomp"), py::arg("nghost"), py::arg("period"), py::arg("cross")=false)
 
         /* Syncs */
         .def("override_sync", py::overload_cast< Periodicity const & >(&FabArray<FArrayBox>::OverrideSync))