diff --git a/.phpcs.xml b/.phpcs.xml
index 61b3ed3..eddb6dc 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="MediaWiki.Commenting.FunctionComment.MissingDocumentationProtected" />
-	</rule>
+	<rule ref="./vendor/mediawiki/mediawiki-codesniffer/MediaWiki" />
 	<file>.</file>
 	<arg name="extensions" value="php" />
 	<arg name="encoding" value="UTF-8" />
diff --git a/includes/PdfHandler.php b/includes/PdfHandler.php
index 7c01449..bfb4ca2 100644
--- a/includes/PdfHandler.php
+++ b/includes/PdfHandler.php
@@ -385,6 +385,10 @@ class PdfHandler extends ImageHandler {
 		return false;
 	}
 
+	/**
+	 * @param File $file
+	 * @return bool|mixed
+	 */
 	protected function getDimensionInfo( File $file ) {
 		$info = $file->getHandlerState( self::STATE_DIMENSION_INFO );
 		if ( !$info ) {