diff --git a/src/View/Helper/AbstractHelper.php b/src/View/Helper/AbstractHelper.php
index 312a2f8a..26fa2760 100644
--- a/src/View/Helper/AbstractHelper.php
+++ b/src/View/Helper/AbstractHelper.php
@@ -130,8 +130,8 @@ abstract class AbstractHelper extends BaseAbstractHelper
         'onvolumechange'     => true,
         'onwaiting'          => true,
         'role'               => true,
-        'aria-labelled-by'   => true,
-        'aria-described-by'  => true,
+        'aria-labelledby'    => true,
+        'aria-describedby'   => true,
         'spellcheck'         => true,
         'style'              => true,
         'tabindex'           => true,