diff --git a/app/Http/Controllers/ReportController.php b/app/Http/Controllers/ReportController.php
index b09841e89c2e..73932be1da39 100644
--- a/app/Http/Controllers/ReportController.php
+++ b/app/Http/Controllers/ReportController.php
@@ -145,7 +145,7 @@ class ReportController extends BaseController
         }
 
         //Get labeled header
-        $report->tableHeaderArray();
+        $columns_labeled = $report->tableHeaderArray();
 
         /*$summary = [];
         if(count(array_values($totals))) {
@@ -167,8 +167,8 @@ class ReportController extends BaseController
 
         dd($summary);*/
 
-        return Excel::create($filename, function($excel) use($report, $data, $reportType, $format) {
-            $excel->sheet(trans("texts.$reportType"), function($sheet) use($report, $data, $format) {
+        return Excel::create($filename, function($excel) use($report, $data, $reportType, $format, $columns_labeled) {
+            $excel->sheet(trans("texts.$reportType"), function($sheet) use($report, $data, $format, $columns_labeled) {
 
                 $sheet->setOrientation('landscape');
                 $sheet->freezeFirstRow();
@@ -178,12 +178,12 @@ class ReportController extends BaseController
                     $sheet->setAllBorders('thin');
 
                 $sheet->rows(array_merge(
-                    [array_map(function($col) {return $col['label'];}, $report->columns_labeled)],
+                    [array_map(function($col) {return $col['label'];}, $columns_labeled)],
                     $data
                 ));
 
                 //Styling header
-                $sheet->cells('A1:'.Utils::num2alpha(count($report->columns_labeled)-1).'1', function($cells) {
+                $sheet->cells('A1:'.Utils::num2alpha(count($columns_labeled)-1).'1', function($cells) {
                     $cells->setBackground('#777777');
                     $cells->setFontColor('#FFFFFF');
                     $cells->setFontSize(14);
diff --git a/app/Ninja/Reports/AbstractReport.php b/app/Ninja/Reports/AbstractReport.php
index 511872be178e..701147b15b91 100644
--- a/app/Ninja/Reports/AbstractReport.php
+++ b/app/Ninja/Reports/AbstractReport.php
@@ -14,7 +14,6 @@ class AbstractReport
     public $totals = [];
     public $columns = [];
     public $data = [];
-    public $columns_labeled = [];
 
     public function __construct($startDate, $endDate, $isExport, $options = false)
     {
@@ -54,6 +53,7 @@ class AbstractReport
     }
 
     public function tableHeaderArray() {
+        $columns_labeled = [];
 
         foreach ($this->columns as $key => $val) {
             if (is_array($val)) {
@@ -75,16 +75,18 @@ class AbstractReport
             $class = count($class) ? implode(' ', $class) : 'group-false';
             $label = trans("texts.{$field}");
 
-            $this->columns_labeled[] = ['label' => $label, 'class' => $class, 'key' => $field];
+            $columns_labeled[] = ['label' => $label, 'class' => $class, 'key' => $field];
         }
+
+        return $columns_labeled;
     }
 
     public function tableHeader()
     {
-        $this->tableHeaderArray();
+        $columns_labeled = $this->tableHeaderArray();
         $str = '';
 
-        foreach ($this->columns_labeled as $field => $attr)
+        foreach ($columns_labeled as $field => $attr)
             $str .= "<th class=\"{$attr['class']}\">{$attr['label']}</th>";
 
         return $str;