Index: pages/filter-cheatsheet.html
===================================================================
--- a/pages/filter-cheatsheet.html
+++ b/pages/filter-cheatsheet.html
@@ -716,17 +716,17 @@
         <ul class="example-list">
           <li>{{s121 All other domains, including:}}</li>
           <li><code>http://example.net/</code></li>
         </ul>
       </p>
     </td>
   </tr>
   <tr>
-    <td><code>example.com,~mail.example.com#selector</code></td>
+    <td><code>example.com,~mail.example.com##selector</code></td>
     <td>
       <p>
         {{s109 Active on:}}
         <ul class="example-list">
           <li><code>http://example.com/</code></li>
           <li><code>https://adverts.example.com/</code></li>
         </ul>
       </p>