diff --git a/functionMap.php b/functionMap.php
index df0a5a6..2e6b2b5 100644
--- a/functionMap.php
+++ b/functionMap.php
@@ -196,4 +196,5 @@
     'WP_Widget_Factory::$widgets' => [null, '@phpstan-var' => 'array<string, \WP_Widget>'],
     'WP_Widget_Factory::register' => [null, 'widget' => 'class-string<\WP_Widget>|\WP_Widget'],
     'WP_Widget_Factory::unregister' => [null, 'widget' => 'class-string<\WP_Widget>|\WP_Widget'],
+    'Custom_Image_Header::show_header_selector' => [null, 'type' => "'default'|'uploaded'"],
 ];
diff --git a/wordpress-stubs.php b/wordpress-stubs.php
index b24542b..de4d37e 100644
--- a/wordpress-stubs.php
+++ b/wordpress-stubs.php
@@ -1242,6 +1242,7 @@ public function process_default_headers()
          *
          * @param string $type The header type. One of 'default' (for the Uploaded Images control)
          *                     or 'uploaded' (for the Uploaded Images control).
+         * @phpstan-param 'default'|'uploaded' $type
          */
         public function show_header_selector($type = 'default')
         {