diff --git a/app/Exports/BranchExport.php b/app/Exports/BranchExport.php
index 67d3373..f78d2a5 100644
--- a/app/Exports/BranchExport.php
+++ b/app/Exports/BranchExport.php
@@ -12,6 +12,7 @@
     class BranchExport implements WithColumnFormatting, WithHeadings, FromCollection, WithMapping
     {
         protected $search;
+        protected $parent_id;
 
         public function __construct($search = null, $parent_id = null)
         {