diff --git a/adev/src/content/examples/aria/tree/src/single-select/basic/app/app.html b/adev/src/content/examples/aria/tree/src/single-select/basic/app/app.html
index f551bcf62c3..3232a4a81c5 100644
--- a/adev/src/content/examples/aria/tree/src/single-select/basic/app/app.html
+++ b/adev/src/content/examples/aria/tree/src/single-select/basic/app/app.html
@@ -27,7 +27,6 @@
         aria-hidden="true"
         class="material-symbols-outlined selected-icon"
         translate="no"
-        aria-hidden="true"
         >check</span
       >
     </li>