diff --git a/html/General/Settings-section-Filter-guide.html b/html/General/Settings-section-Filter-guide.html
index e3c9c2979..ae73a66da 100644
--- a/html/General/Settings-section-Filter-guide.html
+++ b/html/General/Settings-section-Filter-guide.html
@@ -1,6 +1,6 @@
 <div class="warning" #{if Conf['Filter'] then 'hidden' else ''}><code>Filter</code> is disabled.</div>
 <p>
-  Use <a href="https://developer.mozilla.org/en/JavaScript/Guide/Regular_Expressions">regular expressions</a>, one per line.<br>
+  Use <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions">regular expressions</a>, one per line.<br>
   Lines starting with a <code>#</code> will be ignored.<br>
   For example, <code>/weeaboo/i</code> will filter posts containing the string `<code>weeaboo</code>`, case-insensitive.<br>
   MD5 filtering uses exact string matching, not regular expressions.