diff --git a/src/python.c b/src/python.c
index d193d2d127574713e75e9d2c1db6633f48243d1c..4d44977fc22280bf0f4bf039b6b0115eefc0c60e 100644 (file)
--- a/src/python.c
+++ b/src/python.c
@@ -623,7 +623,8 @@ static PyObject *cpy_register_read(PyObject *self, PyObject *args, PyObject *kwd
user_data->data = c;
ts.tv_sec = interval;
ts.tv_nsec = (interval - ts.tv_sec) * 1000000000;
- plugin_register_complex_read(buf, cpy_read_callback, &ts, user_data);
+ plugin_register_complex_read(/* group = */ NULL, buf,
+ cpy_read_callback, &ts, user_data);
return cpy_string_to_unicode_or_bytes(buf);
}