diff --git a/media/css/main-mozilla.css b/media/css/main-mozilla.css
index 6415482b96..af1f586c0c 100644
--- a/media/css/main-mozilla.css
+++ b/media/css/main-mozilla.css
@@ -1198,7 +1198,7 @@ table caption {
 
 /** Header tweaks **/
 #header {
-    z-index: 600;
+    z-index: 2000;
 }
 
 /** END header tweaks **/