diff --git a/guidelines/sc/21/identify-input-purpose.html b/guidelines/sc/21/identify-input-purpose.html
index 48f11559ac..2d9bf9080f 100644
--- a/guidelines/sc/21/identify-input-purpose.html
+++ b/guidelines/sc/21/identify-input-purpose.html
@@ -7,7 +7,7 @@ <h4>Identify Input Purpose</h4>
 	<p>The purpose of each input field collecting information about the user can be <a>programmatically determined</a> when:</p>
   
   <ul>
-    <li>The input field serves a purpose identified in the <a href="#input-purposes">Input Purposes for user interface components section</a>; and</li>
+    <li>The input field serves a purpose identified in the <a href="https://www.w3.org/TR/WCAG21/#input-purposes">Input Purposes for user interface components section</a>; and</li>
     <li>The content is implemented using technologies with support for identifying the expected meaning for form input data.</li>
   </ul>