diff --git a/src/wp-includes/class-wp-customize-manager.php b/src/wp-includes/class-wp-customize-manager.php
index 25660393a0..b0da2b0a84 100644
--- a/src/wp-includes/class-wp-customize-manager.php
+++ b/src/wp-includes/class-wp-customize-manager.php
@@ -4688,7 +4688,7 @@ final class WP_Customize_Manager {
 
 			/*
 			 * If the return URL is a page added by a theme to the Appearance menu via add_submenu_page(),
-			 * verify that belongs to the active theme, otherwise fall back to the Themes screen.
+			 * verify that it belongs to the active theme, otherwise fall back to the Themes screen.
 			 */
 			if ( isset( $query_vars['page'] ) && ! isset( $_registered_pages[ "appearance_page_{$query_vars['page']}" ] ) ) {
 				$return_url = admin_url( 'themes.php' );