diff --git a/include/class.cron.php b/include/class.cron.php
index 232d6bf2bee90bad3824e238ee77812ee411a187..ee67f7f31aac6a742a411a61358726636d22eba3 100644
--- a/include/class.cron.php
+++ b/include/class.cron.php
@@ -61,7 +61,7 @@ class Cron {
         $chance = rand(1,2000);
         switch ($chance) {
         case 42:
-            @db_query('OPTIMIZE TABLE '.LOCK_TABLE);
+            @db_query('OPTIMIZE TABLE `'.LOCK_TABLE.'`');
             break;
         case 242:
             @db_query('OPTIMIZE TABLE '.SYSLOG_TABLE);