diff --git a/trac/htdocs/libcaca.css b/trac/htdocs/libcaca.css
index 2e698da..16981a4 100644
--- a/trac/htdocs/libcaca.css
+++ b/trac/htdocs/libcaca.css
@@ -674,6 +674,11 @@ table.listing tbody td.new_replies {
     border-radius-top-left: 5px;
     border-radius-top-right: 5px;
 }
+
+.message-list div li {
+    background-image: none;
+}
+
 /* === DIFF === */
 
 .diff h2 {