diff --git a/index.html b/index.html
index 022f2fa55..f992f29fd 100644
--- a/index.html
+++ b/index.html
@@ -10979,7 +10979,7 @@ <h2>Interface Mixin <dfn>AccessibilityRole</dfn></h2>
 			};
 			Element includes AccessibilityRole;
 		</pre>
-		<p>User agents MUST <a href="https://html.spec.whatwg.org/#reflecting-content-attributes-in-idl-attributes">reflect</a> the <code><dfn>role</dfn></code> content attribute as the <code>role</code> IDL attribute.</p>
+		<p>User agents MUST <a href="https://www.w3.org/TR/html52/infrastructure.html#reflecting-content-attributes-in-idl-attributes">reflect</a> the <code><dfn>role</dfn></code> content attribute as the <code>role</code> IDL attribute.</p>
 	</section>
 
 	<section id="AriaAttributes" class="normative" data-dfn-for="AriaAttributes" data-link-for="AriaAttributes">
@@ -11038,7 +11038,7 @@ <h2>Interface Mixin <dfn>AriaAttributes</dfn></h2>
 
 		<section id="reflection" class="normative">
 			<h2>ARIA Attribute Reflection</h2>
-			<p>User agents MUST <a href="https://html.spec.whatwg.org/#reflecting-content-attributes-in-idl-attributes">reflect</a> the following content attributes to each of the corresponding IDL attributes.</p>
+			<p>User agents MUST <a href="https://www.w3.org/TR/html52/infrastructure.html#reflecting-content-attributes-in-idl-attributes">reflect</a> the following content attributes to each of the corresponding IDL attributes.</p>
 			<table>
 				<tr><th>IDL Attribute</th><th>Reflected ARIA Content Attribute</th></tr>
 				<tr><td><dfn>ariaActiveDescendant</dfn></td><td><pref>aria-activedescendant</pref></td></tr>