diff --git a/.phpcs.xml b/.phpcs.xml
index 48f5867..3c69313 100644
--- a/.phpcs.xml
+++ b/.phpcs.xml
@@ -1,8 +1,6 @@
 <?xml version="1.0"?>
 <ruleset>
-	<rule ref="./vendor/mediawiki/mediawiki-codesniffer/MediaWiki">
-		<exclude name="Squiz.Scope.MethodScope.Missing" />
-	</rule>
+	<rule ref="./vendor/mediawiki/mediawiki-codesniffer/MediaWiki" />
 	<file>.</file>
 	<arg name="extensions" value="php,php5,inc"/>
 	<arg name="encoding" value="UTF-8"/>
diff --git a/includes/SkinVector.php b/includes/SkinVector.php
index 372a2b8..f7d6171 100644
--- a/includes/SkinVector.php
+++ b/includes/SkinVector.php
@@ -77,7 +77,7 @@ class SkinVector extends SkinTemplate {
 	 * Loads skin and user CSS files.
 	 * @param OutputPage $out
 	 */
-	function setupSkinUserCss( OutputPage $out ) {
+	public function setupSkinUserCss( OutputPage $out ) {
 		parent::setupSkinUserCss( $out );
 
 		$out->addModuleStyles( [