diff --git a/administrator/components/com_installer/View/Installer/HtmlView.php b/administrator/components/com_installer/View/Installer/HtmlView.php
index e385693dd7adf..3963054a51c0a 100644
--- a/administrator/components/com_installer/View/Installer/HtmlView.php
+++ b/administrator/components/com_installer/View/Installer/HtmlView.php
@@ -40,14 +40,6 @@ class HtmlView extends BaseHtmlView
 	 */
 	public $showMessage;
 
-	/**
-	 * The HTML markup for the sidebar
-	 *
-	 * @var    string
-	 * @since  4.0.0
-	 */
-	protected $sidebar;
-
 	/**
 	 * Constructor.
 	 *