diff --git a/Doc/c-api/arg.rst b/Doc/c-api/arg.rst
--- a/Doc/c-api/arg.rst
+++ b/Doc/c-api/arg.rst
@@ -201,17 +201,17 @@ Unless otherwise stated, buffers are not
    the needed size, copy the encoded data into this buffer and set *\*buffer* to
    reference the newly allocated storage.  The caller is responsible for calling
    :c:func:`PyMem_Free` to free the allocated buffer after usage.
 
    If *\*buffer* points to a non-*NULL* pointer (an already allocated buffer),
    :c:func:`PyArg_ParseTuple` will use this location as the buffer and interpret the
    initial value of *\*buffer_length* as the buffer size.  It will then copy the
    encoded data into the buffer and NUL-terminate it.  If the buffer is not large
-   enough, a :exc:`ValueError` will be set.
+   enough, a :exc:`TypeError` will be set.
 
    In both cases, *\*buffer_length* is set to the length of the encoded data
    without the trailing NUL byte.
 
 ``et#`` (:class:`str`, :class:`bytes` or :class:`bytearray`) [const char \*encoding, char \*\*buffer, int \*buffer_length]
    Same as ``es#`` except that byte string objects are passed through without recoding
    them. Instead, the implementation assumes that the byte string object uses the
    encoding passed in as parameter.