diff --git a/.phpcs.xml b/.phpcs.xml
index 9be5cd214..2bc2d29e6 100644
--- a/.phpcs.xml
+++ b/.phpcs.xml
@@ -6,7 +6,6 @@
 		<exclude name="MediaWiki.Commenting.FunctionComment.MissingDocumentationProtected" />
 		<exclude name="MediaWiki.Commenting.FunctionComment.MissingDocumentationPublic" />
 		<exclude name="MediaWiki.WhiteSpace.SpaceBeforeSingleLineComment.NewLineComment" />
-		<exclude name="Squiz.Scope.MethodScope.Missing" />
 	</rule>
 	<file>.</file>
 	<arg name="extensions" value="php,php5,inc" />
diff --git a/src/MathHooks.php b/src/MathHooks.php
index 5c6b84628..833f83d37 100644
--- a/src/MathHooks.php
+++ b/src/MathHooks.php
@@ -151,7 +151,7 @@ class MathHooks {
 	/**
 	 * Set up $wgMathPath and $wgMathDirectory globals if they're not already set.
 	 */
-	static function setup() {
+	public static function setup() {
 		global $wgMathPath, $wgMathDirectory,
 			$wgUploadPath, $wgUploadDirectory;
 
@@ -170,7 +170,7 @@ class MathHooks {
 	 * @param Parser $parser instance of Parser
 	 * @return bool true
 	 */
-	static function onParserFirstCallInit( $parser ) {
+	public static function onParserFirstCallInit( $parser ) {
 		$parser->setHook( 'math', [ self::class, 'mathTagHook' ] );
 		// @deprecated the ce tag is deprecated in favour of chem cf. T153606
 		$parser->setHook( 'ce', [ self::class, 'chemTagHook' ] );
@@ -187,7 +187,7 @@ class MathHooks {
 	 * @param Parser $parser
 	 * @return array|string
 	 */
-	static function mathTagHook( $content, $attributes, $parser ) {
+	public static function mathTagHook( $content, $attributes, $parser ) {
 		static $n = 1;
 		if ( trim( $content ) === '' ) { // bug 8372 https://phabricator.wikimedia.org/rSVN18870
 			return '';
@@ -258,7 +258,7 @@ class MathHooks {
 	 * @param array &$defaultPreferences Preferences array
 	 * @return bool true
 	 */
-	static function onGetPreferences( $user, &$defaultPreferences ) {
+	public static function onGetPreferences( $user, &$defaultPreferences ) {
 		global $wgDefaultUserOptions;
 		$defaultPreferences['math'] = [
 			'type' => 'radio',
@@ -300,7 +300,7 @@ class MathHooks {
 	 * @param Maintenance $maint
 	 * @return bool hook return code
 	 */
-	static function onMaintenanceRefreshLinksInit( $maint ) {
+	public static function onMaintenanceRefreshLinksInit( $maint ) {
 		global $wgUser;
 
 		# Don't generate TeX PNGs (the lack of a sensible current directory causes errors anyway)
@@ -316,7 +316,7 @@ class MathHooks {
 	 * @throws Exception
 	 * @return bool
 	 */
-	static function onLoadExtensionSchemaUpdates( $updater = null ) {
+	public static function onLoadExtensionSchemaUpdates( $updater = null ) {
 		$type = $updater->getDB()->getType();
 
 		if ( in_array( 'latexml', MathRenderer::getValidModes() ) ) {
@@ -354,7 +354,7 @@ class MathHooks {
 	 * @param array &$tables
 	 * @return bool
 	 */
-	static function onParserTestTables( &$tables ) {
+	public static function onParserTestTables( &$tables ) {
 		$tables[] = 'math';
 		$tables[] = 'mathlatexml';
 		return true;
@@ -388,7 +388,7 @@ class MathHooks {
 	/**
 	 * @param string &$toolbar HTML
 	 */
-	static function onEditPageBeforeEditToolbar( &$toolbar ) {
+	public static function onEditPageBeforeEditToolbar( &$toolbar ) {
 		global $wgOut;
 		$wgOut->addModules( [ 'ext.math.editbutton.enabler' ] );
 	}
@@ -411,7 +411,7 @@ class MathHooks {
 	 * @param Parser $parser
 	 * @return array
 	 */
-	static function chemTagHook( $content, $attributes, $parser ) {
+	public static function chemTagHook( $content, $attributes, $parser ) {
 		$attributes['chem'] = true;
 		return self::mathTagHook( '\ce{' . $content . '}', $attributes, $parser );
 	}
diff --git a/src/MathRenderer.php b/src/MathRenderer.php
index 3652f1805..ef16df6f1 100644
--- a/src/MathRenderer.php
+++ b/src/MathRenderer.php
@@ -524,7 +524,7 @@ abstract class MathRenderer {
 	 * Checks if there is an explicit user request to rerender the math-tag.
 	 * @return bool
 	 */
-	function isPurge() {
+	public function isPurge() {
 		if ( $this->purge ) {
 			return true;
 		}
@@ -544,12 +544,12 @@ abstract class MathRenderer {
 	 * use a cached version.
 	 * @param bool $purge
 	 */
-	function setPurge( $purge = true ) {
+	public function setPurge( $purge = true ) {
 		$this->changed = true;
 		$this->purge = $purge;
 	}
 
-	function getLastError() {
+	public function getLastError() {
 		return $this->lastError;
 	}
 
diff --git a/src/MathSource.php b/src/MathSource.php
index 222fe8ed5..a60922257 100644
--- a/src/MathSource.php
+++ b/src/MathSource.php
@@ -23,7 +23,7 @@ class MathSource extends MathRenderer {
 	 * @param string $tex
 	 * @param array $params
 	 */
-	function __construct( $tex = '', $params = [] ) {
+	public function __construct( $tex = '', $params = [] ) {
 		parent::__construct( $tex, $params );
 		$this->setMode( 'source' );
 	}
@@ -33,7 +33,7 @@ class MathSource extends MathRenderer {
 	 *
 	 * @return string span tag with TeX
 	 */
-	function getHtmlOutput() {
+	public function getHtmlOutput() {
 		# No need to render or parse anything more!
 		# New lines are replaced with spaces, which avoids confusing our parser (bugs 23190, 22818)
 		if ( $this->getMathStyle() == 'display' ) {
@@ -63,7 +63,7 @@ class MathSource extends MathRenderer {
 	 * No rendering required in plain text mode
 	 * @return bool
 	 */
-	function render() {
+	public function render() {
 		// assume unchanged to avoid unnecessary database access
 		$this->changed = false;
 		return true;
diff --git a/src/SpecialMathShowImage.php b/src/SpecialMathShowImage.php
index 201d090ad..d8a5fd158 100644
--- a/src/SpecialMathShowImage.php
+++ b/src/SpecialMathShowImage.php
@@ -9,7 +9,7 @@ class SpecialMathShowImage extends SpecialPage {
 	private $renderer = null;
 	private $mode = 'mathml';
 
-	function __construct() {
+	public function __construct() {
 		parent::__construct(
 			'MathShowImage',
 			'', // Don't restrict
@@ -21,7 +21,7 @@ class SpecialMathShowImage extends SpecialPage {
 	 * Sets headers - this should be called from the execute() method of all derived classes!
 	 * @param bool $success
 	 */
-	function setHeaders( $success = true ) {
+	public function setHeaders( $success = true ) {
 		$out = $this->getOutput();
 		$request = $this->getRequest();
 		$out->setArticleBodyOnly( true );
@@ -41,7 +41,7 @@ class SpecialMathShowImage extends SpecialPage {
 		}
 	}
 
-	function execute( $par ) {
+	public function execute( $par ) {
 		global $wgMathEnableExperimentalInputFormats, $wgMathoidCli;
 		$request = $this->getRequest();
 		$hash = $request->getText( 'hash', '' );
diff --git a/src/SpecialMathStatus.php b/src/SpecialMathStatus.php
index 16808f06e..13c085c52 100644
--- a/src/SpecialMathStatus.php
+++ b/src/SpecialMathStatus.php
@@ -22,7 +22,7 @@ class SpecialMathStatus extends SpecialPage {
 	 * @throws MWException
 	 * @throws PermissionsError
 	 */
-	function execute( $query ) {
+	public function execute( $query ) {
 		$this->setHeaders();
 		if ( ! ( $this->getUser()->isAllowed( 'purge' ) ) ) {
 			// The effect of loading this page is comparable to purge a page.
diff --git a/tests/phpunit/MathMathMLTest.php b/tests/phpunit/MathMathMLTest.php
index 0ec6c2862..e2d6600bd 100644
--- a/tests/phpunit/MathMathMLTest.php
+++ b/tests/phpunit/MathMathMLTest.php
@@ -268,11 +268,11 @@ class MathMLHttpRequestTester {
  */
 class MathMLTestStatus {
 
-	static function isGood() {
+	public static function isGood() {
 		return MathMathMLTest::$good;
 	}
 
-	static function hasMessage( $s ) {
+	public static function hasMessage( $s ) {
 		if ( $s == 'http-timed-out' ) {
 			return MathMathMLTest::$timeout;
 		} else {
@@ -280,11 +280,11 @@ class MathMLTestStatus {
 		}
 	}
 
-	static function getHtml() {
+	public static function getHtml() {
 		return MathMathMLTest::$html;
 	}
 
-	static function getWikiText() {
+	public static function getWikiText() {
 		return MathMathMLTest::$html;
 	}