diff --git a/trac/htdocs/main.css b/trac/htdocs/main.css
index ed55257..2bda6d4 100644
--- a/trac/htdocs/main.css
+++ b/trac/htdocs/main.css
@@ -18,6 +18,7 @@ body {
 }
 #mainnav :link, #mainnav :visited, #mainnav :link:hover, #mainnav :visited:hover {
    color: #290c00;
+   border-bottom: none;
 }
 #mainnav :link:hover, #mainnav :visited:hover {
    background: #88AA77;