diff --git a/resources/classes/menu.php b/resources/classes/menu.php
index 36d73f1736..f7411efcff 100644
--- a/resources/classes/menu.php
+++ b/resources/classes/menu.php
@@ -1115,7 +1115,7 @@ if (!class_exists('menu')) {
 			//main menu items
 				if (is_array($menu_array) && sizeof($menu_array) != 0) {
 					foreach ($menu_array as $menu_index_main => $menu_item_main) {
-						$menu_target = ($menu_field['menu_item_category'] == 'external') ? '_blank' : null;
+						$menu_target = ($menu_item_main['menu_item_category'] == 'external') ? '_blank' : '';
 						$html .= "	<a class='menu_side_item_main' ".($menu_item_main['menu_item_link'] != '' ? "href='".$menu_item_main['menu_item_link']."' target='".$menu_target."'" : "onclick=\"menu_side_expand(); $('#sub_".$menu_item_main['menu_item_uuid']."').slideToggle(180, function() { if (!$(this).is(':hidden')) { $('.menu_side_sub').not($(this)).slideUp(180); } });\"")." title=\"".$menu_item_main['menu_language_title']."\">";
 						if ($menu_item_main['menu_item_icon'] != '') {
 							$html .= "<i class='fas ".$menu_item_main['menu_item_icon']." fa-fw' style='z-index: 99800; margin-right: 8px;'></i>";