diff --git a/files/en-us/web/api/document/getselection/index.html b/files/en-us/web/api/document/getselection/index.html
index 1a627e7dcad4821..6fcf46f16e5f9aa 100644
--- a/files/en-us/web/api/document/getselection/index.html
+++ b/files/en-us/web/api/document/getselection/index.html
@@ -52,7 +52,7 @@ <h3 id="String_representation_of_the_Selection_object">String representation of
 
 <pre class="brush:js;">let selectedText = selection.toString();</pre>
 
-<h2 id="Related_objects">Related objects</h3>
+<h2 id="Related_objects">Related objects</h2>
 
 <p>You can call {{domxref("Window.getSelection()")}}, which works identically to
   <code>Document.getSelection()</code>.</p>