diff --git a/main/gradebook/gradebook_flatview.php b/main/gradebook/gradebook_flatview.php
index 35ddfe29ea..dd10ea083b 100755
--- a/main/gradebook/gradebook_flatview.php
+++ b/main/gradebook/gradebook_flatview.php
@@ -228,18 +228,28 @@ if (!empty($_GET['export_report']) &&
 
         switch ($_GET['export_format']) {
             case 'xls':
+                ob_start();
                 $export = new GradeBookResult();
                 $export->exportCompleteReportXLS($printable_data);
+                $content = ob_get_contents();
+                ob_end_clean();
+                echo $content;
                 break;
             case 'doc':
+                ob_start();
                 $export = new GradeBookResult();
                 $export->exportCompleteReportDOC($printable_data);
+                ob_end_clean();
                 exit;
                 break;
             case 'csv':
             default:
+                ob_start();
                 $export = new GradeBookResult();
                 $export->exportCompleteReportCSV($printable_data);
+                $content = ob_get_contents();
+                ob_end_clean();
+                echo $content;
                 exit;
                 break;
         }
diff --git a/main/gradebook/lib/GradebookUtils.php b/main/gradebook/lib/GradebookUtils.php
index e43341bf45..17346c61ce 100644
--- a/main/gradebook/lib/GradebookUtils.php
+++ b/main/gradebook/lib/GradebookUtils.php
@@ -943,8 +943,12 @@ class GradebookUtils
         );
 
         $page_format = $params['orientation'] == 'landscape' ? 'A4-L' : 'A4';
+        ob_start();
         $pdf = new PDF($page_format, $page_format, $pdfParams);
         $pdf->html_to_pdf_with_template($flatviewtable->return_table());
+        $content = ob_get_contents();
+        ob_end_clean();
+        echo $content;
         exit;
     }
 
diff --git a/main/gradebook/lib/gradebook_result.class.php b/main/gradebook/lib/gradebook_result.class.php
index b497819a19..efb17e3f7b 100644
--- a/main/gradebook/lib/gradebook_result.class.php
+++ b/main/gradebook/lib/gradebook_result.class.php
@@ -91,7 +91,7 @@ class GradeBookResult
 
         //headers
         foreach ($data[0] as $header_col) {
-            $worksheet->SetCellValueByColumnAndRow($line, $column, $header_col);
+            $worksheet->SetCellValueByColumnAndRow($line, $column, html_entity_decode(strip_tags($header_col)));
             $column++;
         }
         $line++;