Index: library/Zend/Form/Decorator/Fieldset.php =================================================================== --- library/Zend/Form/Decorator/Fieldset.php (revision 25022) +++ library/Zend/Form/Decorator/Fieldset.php (working copy) @@ -133,7 +133,7 @@ $id = (string)$element->getId(); if ((!array_key_exists('id', $attribs) || $attribs['id'] == $id) && '' !== $id) { - $attribs['id'] = 'fieldset-' . $id; + $attribs['id'] = $id . '-fieldset'; } if (null !== $legend) {