diff --git a/index.html b/index.html
index 05e65a7c..89c5ac1a 100644
--- a/index.html
+++ b/index.html
@@ -9901,7 +9901,8 @@ <h4>4.3.17. [SameObject]</h4>
               extended attribute <span class="rfc2119">MUST NOT</span>
               be used on anything other than a <a class="dfnref" href="#dfn-read-only">read only</a>
               <a class="dfnref" href="#dfn-attribute">attribute</a>
-              whose type is an <a href="#idl-interface">interface type</a>.
+              whose type is an <a href="#idl-interface">interface type</a>,
+              an <a href="#idl-array">array type</a> or <a class="idltype" href="#idl-object">object</a>.
             </p>
             <div class="example"><div class="exampleHeader">Example</div>
               <p>
diff --git a/index.xml b/index.xml
index 955ce187..b5c9008c 100644
--- a/index.xml
+++ b/index.xml
@@ -9715,7 +9715,8 @@ counter.value;                                           <span class='comment'>/
               extended attribute <span class='rfc2119'>MUST NOT</span>
               be used on anything other than a <a class='dfnref' href='#dfn-read-only'>read only</a>
               <a class='dfnref' href='#dfn-attribute'>attribute</a>
-              whose type is an <a href='#idl-interface'>interface type</a>.
+              whose type is an <a href='#idl-interface'>interface type</a>,
+              an <a href='#idl-array'>array type</a> or <span class='idltype'>object</span>.
             </p>
             <div class='example'>
               <p>