diff --git a/main/document/upload.php b/main/document/upload.php
index 6234680d0f..762bd306d4 100755
--- a/main/document/upload.php
+++ b/main/document/upload.php
@@ -34,7 +34,7 @@
  */
 
 // Name of the language file that needs to be included
-$language_file = 'document';
+$language_file[] = array('document','gradebook');
 
 // Including the global initialization file
 require_once '../inc/global.inc.php';