diff --git a/libraries/cms/html/menu.php b/libraries/cms/html/menu.php
index 27b982ebcc89e..5bd4d22de9a03 100644
--- a/libraries/cms/html/menu.php
+++ b/libraries/cms/html/menu.php
@@ -351,7 +351,7 @@ public static function linkOptions($all = false, $unassigned = false, $clientId
 	 */
 	public static function treerecurse($id, $indent, $list, &$children, $maxlevel = 9999, $level = 0, $type = 1)
 	{
-		if ($level <= $maxlevel && @$children[$id])
+		if ($level <= $maxlevel && isset($children[$id]) && is_array($children[$id]))
 		{
 			if ($type)
 			{
@@ -379,8 +379,16 @@ public static function treerecurse($id, $indent, $list, &$children, $maxlevel =
 
 				$list[$id]           = $v;
 				$list[$id]->treename = $indent . $txt;
-				$list[$id]->children = count(@$children[$id]);
-				$list                = static::treerecurse($id, $indent . $spacer, $list, $children, $maxlevel, $level + 1, $type);
+
+				if (isset($children[$id]) && is_array($children[$id]))
+				{
+					$list[$id]->children = count($children[$id]);
+					$list                = static::treerecurse($id, $indent . $spacer, $list, $children, $maxlevel, $level + 1, $type);
+				}
+				else
+				{
+					$list[$id]->children = 0;
+				}
 			}
 		}