diff --git a/src/wp-includes/class-wp-theme.php b/src/wp-includes/class-wp-theme.php
index a6966351f185f..1940feed5e349 100644
--- a/src/wp-includes/class-wp-theme.php
+++ b/src/wp-includes/class-wp-theme.php
@@ -1002,7 +1002,7 @@ private function sanitize_header( $header, $value ) {
 	 *
 	 * @param string       $header    Theme header. Name, Description, Author, Version, ThemeURI, AuthorURI, Status, Tags.
 	 * @param string|array $value     Value to mark up. An array for Tags header, string otherwise.
-	 * @param string       $translate Whether the header has been translated.
+	 * @param bool         $translate Whether the header has been translated.
 	 * @return string Value, marked up.
 	 */
 	private function markup_header( $header, $value, $translate ) {