HTTPretty: HTTPretty breaking other URLs

With the following test

@httprettified
def test_httpretty_should_not_override_other_urls():
    u"HTTPretty shouldn't break other URLs"

    HTTPretty.register_uri(HTTPretty.GET, "http://github.com/foo",
                           body="<root><baz /</root>")

    response = requests.get('http://google.com/')
    expect(response.status_code).to.equal(200)

I get

  File "HTTPretty/tests/functional/test_requests.py", line 153, in test_httpretty_should_not_override_other_urls
    response = requests.get('http://google.com/')
  File "HTTPretty/lib/python2.7/site-packages/requests/api.py", line 55, in get
    return request('get', url, **kwargs)
  File "HTTPretty/lib/python2.7/site-packages/requests/api.py", line 44, in request
    return session.request(method=method, url=url, **kwargs)
  File "HTTPretty/lib/python2.7/site-packages/requests/sessions.py", line 289, in request
    history = [r for r in gen] if allow_redirects else []
  File "HTTPretty/lib/python2.7/site-packages/requests/sessions.py", line 133, in resolve_redirects
    proxies=proxies
  File "HTTPretty/lib/python2.7/site-packages/requests/sessions.py", line 279, in request
    resp = self.send(prep, stream=stream, timeout=timeout, verify=verify, cert=cert, proxies=proxies)
  File "HTTPretty/lib/python2.7/site-packages/requests/sessions.py", line 374, in send
    r = adapter.send(request, **kwargs)
  File "HTTPretty/lib/python2.7/site-packages/requests/adapters.py", line 222, in send
    r.content
  File "HTTPretty/lib/python2.7/site-packages/requests/models.py", line 550, in content
    self._content = bytes().join(self.iter_content(CONTENT_CHUNK_SIZE)) or bytes()
  File "HTTPretty/lib/python2.7/site-packages/requests/models.py", line 496, in generate
    chunk = self.raw.read(chunk_size)
  File "HTTPretty/lib/python2.7/site-packages/requests/packages/urllib3/response.py", line 148, in read
    return self._fp.read(amt)
  File "python2.7/httplib.py", line 541, in read
    return self._read_chunked(amt)
  File "python2.7/httplib.py", line 592, in _read_chunked
    value.append(self._safe_read(amt))
  File "python2.7/httplib.py", line 649, in _safe_read
    raise IncompleteRead(''.join(s), amt)
IncompleteRead: IncompleteRead(532 bytes read)