diff --git a/src/wp-includes/kses.php b/src/wp-includes/kses.php
index d34608b89f..20d6b9d5dd 100644
--- a/src/wp-includes/kses.php
+++ b/src/wp-includes/kses.php
@@ -398,6 +398,7 @@ if ( ! CUSTOM_TAGS ) {
 		'ol' => array(
 			'start' => true,
 			'type' => true,
+			'reversed' => true,
 		),
 		'var' => array(),
 		'video' => array(
diff --git a/tests/phpunit/tests/kses.php b/tests/phpunit/tests/kses.php
index c4c1e8e24c..e105813449 100644
--- a/tests/phpunit/tests/kses.php
+++ b/tests/phpunit/tests/kses.php
@@ -653,4 +653,15 @@ EOF;
 
 		$this->assertEquals( $input, wp_kses( $input, $allowedposttags ) );
 	}
+
+	/**
+	 * @ticket 35079
+	 */
+	function test_ol_reversed() {
+		global $allowedposttags;
+
+		$input = '<ol reversed="reversed"><li>Item 1</li><li>Item 2</li><li>Item 3</li></ol>';
+
+		$this->assertEquals( $input, wp_kses( $input, $allowedposttags ) );
+	}
 }