Problem with encoding and decoding None

[umax]

There is a problem with decoding encoded by yajl value:

In [1]: import yajl
In [2]: json_data = yajl.dumps({None:123})
In [3]: json_data
Out[3]: '{null:123}'

In [4]: data = yajl.loads(json_data)

ValueError Traceback (most recent call last)
/home/umax/projects/json_text/ in ()
----> 1 data = yajl.loads(json_data)

ValueError: parse error