diff --git a/datamodels/2.x/itop-backup/ajax.backup.php b/datamodels/2.x/itop-backup/ajax.backup.php
index 7196242c3..528a48916 100644
--- a/datamodels/2.x/itop-backup/ajax.backup.php
+++ b/datamodels/2.x/itop-backup/ajax.backup.php
@@ -213,6 +213,9 @@ JS
 			break;
 
 		case 'download':
+			while (ob_get_level() > 0) {
+				ob_end_clean();
+			}
 			$sFile = utils::ReadParam('file', '', false, 'raw_data');
 			$oBackup = new DBBackupScheduled();
 			$sBackupDir = APPROOT.'data/backups/';