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-rw-r--r--gr-qtgui/python/qtgui/bindings/const_sink_c_python.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/gr-qtgui/python/qtgui/bindings/const_sink_c_python.cc b/gr-qtgui/python/qtgui/bindings/const_sink_c_python.cc
index 0411614c8a..bd0fd5912b 100644
--- a/gr-qtgui/python/qtgui/bindings/const_sink_c_python.cc
+++ b/gr-qtgui/python/qtgui/bindings/const_sink_c_python.cc
@@ -49,7 +49,7 @@ void bind_const_sink_c(py::module& m)
py::arg("size"),
py::arg("name"),
py::arg("nconnections") = 1,
- py::arg("parent") = __null,
+ py::arg("parent") = nullptr,
D(const_sink_c, make))