diff --git a/files.html b/files.html
index 1382c91..14f013c 100644
--- a/files.html
+++ b/files.html
@@ -399,7 +399,7 @@ AttributeError: '_io.BufferedReader' object has no attribute 'encoding'</samp></
 </ol>
 
 <blockquote class=note>
-<p><span class=u>&#x261E;</span><code>io.StringIO</code> lets you treat a string as a file. There&#8217;s also a <code>io.BytesIO</code> class, which lets you treat a byte array as a file.
+<p><span class=u>&#x261E;</span><code>io.StringIO</code> lets you treat a string as a text file. There&#8217;s also a <code>io.BytesIO</code> class, which lets you treat a byte array as a binary file.
 </blockquote>
 
 <h3 id=gzip>Handling Compressed Files</h3>