bpo-42451: Indicate that PyTuple_GetItem does not support negative indices (GH-23529)
diff --git a/Doc/c-api/tuple.rst b/Doc/c-api/tuple.rst
index bf751e44..c0c14f4 100644
--- a/Doc/c-api/tuple.rst
+++ b/Doc/c-api/tuple.rst
@@ -57,7 +57,7 @@
.. c:function:: PyObject* PyTuple_GetItem(PyObject *p, Py_ssize_t pos)
Return the object at position *pos* in the tuple pointed to by *p*. If *pos* is
- out of bounds, return ``NULL`` and set an :exc:`IndexError` exception.
+ negative or out of bounds, return ``NULL`` and set an :exc:`IndexError` exception.
.. c:function:: PyObject* PyTuple_GET_ITEM(PyObject *p, Py_ssize_t pos)