diff --git a/advanced-iterators.html b/advanced-iterators.html
index 16bec1a..6d2d264 100755
--- a/advanced-iterators.html
+++ b/advanced-iterators.html
@@ -146,7 +146,7 @@ if __name__ == '__main__':
 <li>So, given a list of strings, this line of code returns all the unique characters across all the strings, with no duplicates.
 </ol>
 
-<p>The alphametics solver uses this technique to get a list of all the unique characters in the puzzle.
+<p>The alphametics solver uses this technique to build a set of all the unique characters in the puzzle.
 
 <pre class='nd pp'><code>unique_characters = set(''.join(words))</code></pre>