diff --git a/doc/source/user_guide/io.rst b/doc/source/user_guide/io.rst
index d4be9d802d697..3a81b060cd73a 100644
--- a/doc/source/user_guide/io.rst
+++ b/doc/source/user_guide/io.rst
@@ -23,7 +23,7 @@ The pandas I/O API is a set of top level ``reader`` functions accessed like
text;`JSON `__;:ref:`read_json`;:ref:`to_json`
text;`HTML `__;:ref:`read_html`;:ref:`to_html`
text; Local clipboard;:ref:`read_clipboard`;:ref:`to_clipboard`
- ;`MS Excel `__;:ref:`read_excel`;:ref:`to_excel`
+ binary;`MS Excel `__;:ref:`read_excel`;:ref:`to_excel`
binary;`OpenDocument `__;:ref:`read_excel`;
binary;`HDF5 Format `__;:ref:`read_hdf`;:ref:`to_hdf`
binary;`Feather Format `__;:ref:`read_feather`;:ref:`to_feather`