diff --git a/skin/classic/treestyletab/sidebar/sidebar.css b/skin/classic/treestyletab/sidebar/sidebar.css
index 97202c97..86b1ca2c 100644
--- a/skin/classic/treestyletab/sidebar/sidebar.css
+++ b/skin/classic/treestyletab/sidebar/sidebar.css
@@ -213,6 +213,7 @@ tabbrowser[treestyletab-mode="vertical"]
 	font-size: 11px;
 	font-weight: normal !important;
 	color: #000000 !important;
+	text-align: start;
 	text-shadow: none !important;
 	margin-bottom: 1px;
 }