diff --git a/content/treestyletab/hacks.js b/content/treestyletab/hacks.js
index 8934c12b..4d04fbfa 100644
--- a/content/treestyletab/hacks.js
+++ b/content/treestyletab/hacks.js
@@ -128,11 +128,13 @@ TreeStyleTabService.overrideExtensions = function() {
 								appcontent.style.marginRight = '-'+autoHIDE.__treestyletab__tabBarWidth+'px';
 								appcontent.__treestyletab__resized = true;
 							}
+/* doesn't work this hack for rightside tab bar
 							else if (treeStyleTabPos == 'right' &&
 								!appcontent.__treestyletab__resized) {
 								appcontent.style.marginLeft = '-'+autoHIDE.__treestyletab__tabBarWidth+'px';
 								appcontent.__treestyletab__resized = true;
 							}
+*/
 							window.setTimeout('autoHIDE.MoveC(true);', 100);
 							return;
 						}
diff --git a/content/treestyletab/treestyletab.css b/content/treestyletab/treestyletab.css
index 57e174e3..45724c02 100644
--- a/content/treestyletab/treestyletab.css
+++ b/content/treestyletab/treestyletab.css
@@ -30,7 +30,7 @@ tabbrowser[treestyletab-vertical="true"] .tab-drop-indicator-bar
 	display: none !important;
 }
 
-/* to modify browser's margin-left/margin-right dynamically */
+/* to modify browser's margin dynamically */
 #appcontent {
 	position: relative;
 	margin: 0;