diff --git a/trac/htdocs/libcaca.css b/trac/htdocs/libcaca.css
index 6ae18c4..420553f 100644
--- a/trac/htdocs/libcaca.css
+++ b/trac/htdocs/libcaca.css
@@ -594,3 +594,9 @@ table.listing tbody td.new_replies {
     text-align: left;
     width: 49%;
 }
+
+/* admin */
+
+.admin #tabs li {
+    background: none;
+}