diff --git a/content/treestyletab/treestyletabbrowser.js b/content/treestyletab/treestyletabbrowser.js
index 4f36f6b9..d3857d59 100644
--- a/content/treestyletab/treestyletabbrowser.js
+++ b/content/treestyletab/treestyletabbrowser.js
@@ -692,7 +692,7 @@ TreeStyleTabBrowser.prototype = {
 		}
 
 		this.onPrefChange('extensions.treestyletab.tabbar.style');
-		// this.onPrefChange('extensions.treestyletab.twisty.style');
+		this.onPrefChange('extensions.treestyletab.twisty.style');
 		this.onPrefChange('extensions.treestyletab.showBorderForFirstTab');
 		this.onPrefChange('extensions.treestyletab.tabbar.invertTabContents');
 		this.onPrefChange('extensions.treestyletab.tabbar.invertClosebox');