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-rw-r--r--gr-digital/python/digital/bindings/header_buffer_python.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/gr-digital/python/digital/bindings/header_buffer_python.cc b/gr-digital/python/digital/bindings/header_buffer_python.cc
index 5e07bac14f..fc632ebef0 100644
--- a/gr-digital/python/digital/bindings/header_buffer_python.cc
+++ b/gr-digital/python/digital/bindings/header_buffer_python.cc
@@ -37,7 +37,7 @@ void bind_header_buffer(py::module& m)
m, "header_buffer", D(header_buffer))
.def(py::init<uint8_t*>(),
- py::arg("buffer") = __null,
+ py::arg("buffer") = nullptr,
D(header_buffer, header_buffer, 0))
.def(py::init<gr::digital::header_buffer const&>(),
py::arg("arg0"),