diff --git a/trac/htdocs/libcaca.css b/trac/htdocs/libcaca.css
index 622fce2..2d06f3f 100644
--- a/trac/htdocs/libcaca.css
+++ b/trac/htdocs/libcaca.css
@@ -653,8 +653,8 @@ table.listing tbody td.new_replies {
 .topic-list th :active, .topic-list th :hover {
     color: #fff;
 }
-.message-list div {
-    border-color: #2C1F1C;
+.message-list div.replies div.body {
+    border: 1px solid #2C1F1C;
 }
 .message-list div.topic,
 .message-list div.replies,