diff --git a/native-datatypes.html b/native-datatypes.html
index e00705f..12eb0f8 100644
--- a/native-datatypes.html
+++ b/native-datatypes.html
@@ -378,8 +378,8 @@ KeyError: 'db.diveintopython3.org'</samp></pre>
 <h3 id=mixed-value-dictionaries>Mixed-Value Dictionaries</h3>
 <p>Dictionaries aren&#8217;t just for strings. Dictionary values can be any datatype, including integers, booleans, arbitrary objects, or even other dictionaries. And within a single dictionary, the values don&#8217;t all need to be the same type; you can mix and match as needed. Dictionary keys are more restricted, but they can be strings, integers, and a few other types. You can also mix and match key datatypes within a dictionary.
 <p>In fact, you&#8217;ve already seen a dictionary with non-string keys and values, in <a href=your-first-python-program.html#divingin>your first Python program</a>.
-<pre><code>SUFFIXES = {1000: ('KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'),
-            1024: ('KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB')}</code></pre>
+<pre><code>SUFFIXES = {1000: ['KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'],
+            1024: ['KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB']}</code></pre>
 <p>Let's tear that apart in the interactive shell.
 <pre class=screen>
 <samp class=p>>>> </samp><kbd>SUFFIXES = {1000: ['KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'],</kbd>