--verbose --form error

[dair-targ]

$> http POST -f -v http://httpbin.org/post hello=world
Traceback (most recent call last):
  File "/usr/local/bin/http", line 9, in <module>
    load_entry_point('httpie==0.2.0', 'console_scripts', 'http')()
  File "/usr/local/lib/python2.7/dist-packages/httpie/__main__.py", line 115, in main
    output = _get_output(args, stdout_isatty, response)
  File "/usr/local/lib/python2.7/dist-packages/httpie/__main__.py", line 92, in _get_output
    with_body=cliparse.OUT_REQ_BODY in args.output_options
  File "/usr/local/lib/python2.7/dist-packages/httpie/httpmessage.py", line 66, in format
    return '\n'.join(bit.strip() for bit in bits)
  File "/usr/local/lib/python2.7/dist-packages/httpie/httpmessage.py", line 66, in <genexpr>
    return '\n'.join(bit.strip() for bit in bits)
AttributeError: 'OrderedDict' object has no attribute 'strip'