diff --git a/modules/system/system.install b/modules/system/system.install
index 5a69ce5..a9edd0e 100644
--- a/modules/system/system.install
+++ b/modules/system/system.install
@@ -2852,7 +2852,7 @@ function system_update_7061(&$sandbox) {
           ->execute();
 
         $insert = db_insert('system_update_7061_fid_mapping')
-          ->fields(['old_fid', 'new_fid']);
+          ->fields(array('old_fid', 'new_fid'));
         foreach ($fids as $fid) {
           $insert->values(array('old_fid' => $fid, 'new_fid' => $kept_fid));
         }