diff --git a/ui/css/main.css b/ui/css/main.css
index 48806939287..62298f2301c 100644
--- a/ui/css/main.css
+++ b/ui/css/main.css
@@ -1754,7 +1754,7 @@ a:hover {
 	cursor:hand;
 }
 
-.searchpanel_advancebutton.up {
+.searchpanel_filterbutton.up {
 	background:url(../images/filter_uparrow.gif) no-repeat top left;
 }