diff --git a/admin/themes/default/template/site_update.tpl b/admin/themes/default/template/site_update.tpl
index c957ea2a5..d1d33dc8f 100644
--- a/admin/themes/default/template/site_update.tpl
+++ b/admin/themes/default/template/site_update.tpl
@@ -89,7 +89,7 @@
 	</fieldset>
 
   <fieldset id="syncSimulate">
-    <legend>{'Simulation'|@translate}</legend>
+    <legend>{'[Simulation]'|@translate}</legend>
     <ul><li><label><input type="checkbox" name="simulate" value="1" checked="checked" {$TAG_INPUT_ENABLED}> {'only perform a simulation (no change in database will be made)'|@translate}</label></li></ul>
   </fieldset>