diff --git a/administrator/components/com_postinstall/src/View/Messages/HtmlView.php b/administrator/components/com_postinstall/src/View/Messages/HtmlView.php
index ae83c9efcc7a2..4ff2debc1ea11 100644
--- a/administrator/components/com_postinstall/src/View/Messages/HtmlView.php
+++ b/administrator/components/com_postinstall/src/View/Messages/HtmlView.php
@@ -14,6 +14,7 @@
 use Joomla\CMS\Factory;
 use Joomla\CMS\Language\Text;
 use Joomla\CMS\MVC\View\HtmlView as BaseHtmlView;
+use Joomla\CMS\Toolbar\Toolbar;
 use Joomla\CMS\Toolbar\ToolbarHelper;
 use Joomla\Component\Postinstall\Administrator\Model\MessagesModel;
 
@@ -67,16 +68,18 @@ public function display($tpl = null)
 	 */
 	private function toolbar()
 	{
+		$toolbar = Toolbar::getInstance('toolbar');
+
 		if (!empty($this->items))
 		{
-			ToolbarHelper::custom('message.hideAll', 'unpublish.png', 'unpublish_f2.png', 'COM_POSTINSTALL_HIDE_ALL_MESSAGES', false);
+			$toolbar->unpublish('message.hideAll', 'COM_POSTINSTALL_HIDE_ALL_MESSAGES');
 		}
 
 		// Options button.
 		if (Factory::getUser()->authorise('core.admin', 'com_postinstall'))
 		{
-			ToolbarHelper::preferences('com_postinstall', 550, 875);
-			ToolbarHelper::help('JHELP_COMPONENTS_POST_INSTALLATION_MESSAGES');
+			$toolbar->preferences('com_postinstall');
+			$toolbar->help('JHELP_COMPONENTS_POST_INSTALLATION_MESSAGES');
 		}
 	}
 }