diff --git a/core/ajax/update.php b/core/ajax/update.php
index e40d0def4e43806ff38721992d0b16b08de11d5a..31b8c0dbb65a08c2e30aebdb322304cf93142359 100644
--- a/core/ajax/update.php
+++ b/core/ajax/update.php
@@ -37,8 +37,8 @@ if (OC::checkUpgrade(false)) {
  */
 function __doFileCacheUpgrade($watcher) {
 	$query = \OC_DB::prepare('
-		SELECT DISTINCT user
-		FROM`*PREFIX*fscache`
+		SELECT DISTINCT `user`
+		FROM `*PREFIX*fscache`
 	');
 	$result = $query->execute();
 	$users = $result->fetchAll();