diff --git a/resources/IE60Fixes.css b/resources/IE60Fixes.css
index 75fa44c..fa4131e 100644
--- a/resources/IE60Fixes.css
+++ b/resources/IE60Fixes.css
@@ -118,9 +118,3 @@ div.tright,
 div.tleft {
 	position: relative;
 }
-
-/* bug 12846 */
-body.rtl #preftoc a,
-body.rtl #preftoc a:active {
-	float: left;
-}
diff --git a/resources/skinStyles/mediawiki.special.preferences.styles.less b/resources/skinStyles/mediawiki.special.preferences.styles.less
deleted file mode 100644
index d44df9b..0000000
--- a/resources/skinStyles/mediawiki.special.preferences.styles.less
+++ /dev/null
@@ -1,85 +0,0 @@
-.client-js #preftoc {
-	/* Tabs */
-	width: 100%;
-	clear: both;
-	margin: 0;
-	padding: 0;
-
-	li {
-		/* Tab */
-		background-color: #f0f0f0;
-		color: #000;
-		margin: 1px -2px 1px 2px;
-		float: left;
-		padding: 2px 0 3px 0;
-		border: 1px solid #fff;
-		border-right-color: #716f64;
-		border-bottom: 0;
-		position: relative;
-		white-space: nowrap;
-		list-style-type: none;
-		list-style-image: none;
-
-		&.selected {
-			font-weight: bold;
-			background-color: #f9f9f9;
-			border: 1px solid #aaa;
-			border-bottom: 0;
-			cursor: default;
-			top: 2px;
-			padding-top: 2px;
-			margin-right: -3px;
-
-			a {
-				cursor: default;
-				text-decoration: none;
-			}
-		}
-	}
-
-	a,
-	a:active {
-		display: inline-block;
-		color: #000;
-		padding: 0.7em;
-		position: relative;
-		text-decoration: none;
-	}
-}
-
-#preferences {
-	margin: 0;
-	border: 1px solid #aaa;
-	clear: both;
-	padding: 1.5em;
-	background-color: #f9f9f9;
-}
-
-.client-js #preferences {
-	> fieldset {
-		border: 0;
-		padding: 0;
-		margin: 0;
-
-		> legend {
-			display: none;
-		}
-	}
-
-	legend {
-		font-weight: bold;
-	}
-}
-
-.mw-htmlform-submit {
-	font-weight: bold;
-	padding-left: 0.3em;
-	padding-right: 0.3em;
-	margin-right: 2em;
-}
-
-.htmlform-tip {
-	font-size: x-small;
-	padding: 0.2em 2em;
-	color: #666;
-}
diff --git a/skin.json b/skin.json
index 730d3b4..b67aea1 100644
--- a/skin.json
+++ b/skin.json
@@ -78,7 +78,6 @@
 	"ResourceModuleSkinStyles": {
 		"monobook": {
 			"+mediawiki.action.view.redirectPage": "resources/skinStyles/mediawiki.action.view.redirectPage.css",
-			"+mediawiki.special.preferences.styles": "resources/skinStyles/mediawiki.special.preferences.styles.less",
 			"+mediawiki.notification": "resources/skinStyles/mediawiki.notification.less",
 			"+oojs-ui-core.styles": "resources/skinStyles/ooui.less",
 			"+ext.uls.interface": "resources/skinStyles/ext.uls.interface.less"