diff --git a/Doc/c-api/buffer.rst b/Doc/c-api/buffer.rst
index a703fd6..ad6e3937 100644
--- a/Doc/c-api/buffer.rst
+++ b/Doc/c-api/buffer.rst
@@ -324,7 +324,7 @@
    given shape with the given number of bytes per element.
 
 
-.. cfunction:: int PyBuffer_FillInfo(Py_buffer *view, void *buf, Py_ssize_t len, int readonly, int infoflags)
+.. cfunction:: int PyBuffer_FillInfo(Py_buffer *view, PyObject *obj, void *buf, Py_ssize_t len, int readonly, int infoflags)
 
    Fill in a buffer-info structure, *view*, correctly for an exporter that can
    only share a contiguous chunk of memory of "unsigned bytes" of the given
diff --git a/Doc/c-api/typeobj.rst b/Doc/c-api/typeobj.rst
index 2e2f9c4..378bfe1 100644
--- a/Doc/c-api/typeobj.rst
+++ b/Doc/c-api/typeobj.rst
@@ -1210,7 +1210,7 @@
 
       This should fill a :ctype:`Py_buffer` with the necessary data for
       exporting the type.  The signature of :data:`getbufferproc` is ``int
-      (PyObject *obj, PyObject *view, int flags)``.  *obj* is the object to
+      (PyObject *obj, Py_buffer *view, int flags)``.  *obj* is the object to
       export, *view* is the :ctype:`Py_buffer` struct to fill, and *flags* gives
       the conditions the caller wants the memory under.  (See
       :cfunc:`PyObject_GetBuffer` for all flags.)  :cmember:`bf_getbuffer` is