diff --git a/htdocs/core/modules/export/export_csv.modules.php b/htdocs/core/modules/export/export_csv.modules.php
index 79ec096b8de..c3c8431962e 100644
--- a/htdocs/core/modules/export/export_csv.modules.php
+++ b/htdocs/core/modules/export/export_csv.modules.php
@@ -33,7 +33,7 @@ set_time_limit(0);
 class ExportCsv extends ModeleExports
 {
 	/**
-	 * @var int ID
+	 * @var string ID ex: csv, tsv, excel...
 	 */
 	public $id;