diff --git a/docs/index.rst b/docs/index.rst
index 558b17c..310ad40 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -15,6 +15,7 @@ functions for Chinese text processing:
 
 .. code:: python
 
+    >>> import dragonmapper.hanzi
     >>> s = '我是一个美国人。'
     >>> dragonmapper.hanzi.is_simplified(s)
     True
@@ -25,6 +26,7 @@ functions for Chinese text processing:
 
 .. code:: python
 
+    >>> import dragonmapper.transcriptions
     >>> s = 'Wǒ shì yīgè měiguórén.'
     >>> dragonmapper.transcriptions.is_pinyin(s)
     True
diff --git a/dragonmapper/data/transcriptions.csv b/dragonmapper/data/transcriptions.csv
index 6447017..072be78 100644
--- a/dragonmapper/data/transcriptions.csv
+++ b/dragonmapper/data/transcriptions.csv
@@ -234,6 +234,7 @@ nun,ㄋㄨㄣ,nwən
 nuo,ㄋㄨㄛ,nwɔ
 nü,ㄋㄩ,ny
 nüe,ㄋㄩㄝ,nɥœ
+o,ㄛ,ɔ
 ou,ㄡ,oʊ
 pa,ㄆㄚ,pʰa
 pai,ㄆㄞ,pʰaɪ

diff --git a/dragonmapper/tests/test-transcriptions.py b/dragonmapper/tests/test-transcriptions.py
index a4d5e14..04a5733 100644
--- a/dragonmapper/tests/test-transcriptions.py
+++ b/dragonmapper/tests/test-transcriptions.py
@@ -173,3 +173,9 @@ class TestConvertFunctions(unittest.TestCase):
         numbered = 'Ao4di4li4'
 
         self.assertEqual(numbered, trans.accented_to_numbered(accented))
+
+    def test_issue_23(self):
+        pinyin = 'ó'
+        zhuyin = 'ㄛˊ'
+
+        self.assertEqual(zhuyin, trans.pinyin_to_zhuyin(pinyin))

AttributeError: 'module' object has no attribute 'hanzi'
Hey! I'm trying to use dragonmapper and I'm getting a confusing error. I installed it on Ubuntu 16.04 with the following command:

`pip install dragonmapper --user`

Then tried to use it:

```
import dragonmapper
dragonmapper.hanzi.is_simplified(u'你好')
```

but get the following error:
`AttributeError: 'module' object has no attribute 'hanzi'`

python --version outputs:
`Python 2.7.12`

What's up?

dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_issue_23
dragonmapper/tests/test-transcriptions.py::TestIdentifyFunctions::test_is_zhuyin dragonmapper/tests/test-transcriptions.py::TestIdentifyFunctions::test_is_zhuyin_compatible dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_drop_apostrophe dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_handle_middle_dot dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_ipa_to_pinyin dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_ipa_to_zhuyin dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_issue_2 dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_issue_3 dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_issue_4 dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_issue_5 dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_issue_6 dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_issue_8 dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_pinyin_middle_dot dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_pinyin_r_suffix dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_pinyin_to_ipa dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_pinyin_to_zhuyin dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_zhuyin_to_ipa dragonmapper/tests/test-transcriptions.py::TestConvertFunctions::test_zhuyin_to_pinyin