diff --git a/wp-admin/includes/media.php b/wp-admin/includes/media.php
index 0910693fc9..cee19890a7 100644
--- a/wp-admin/includes/media.php
+++ b/wp-admin/includes/media.php
@@ -2083,13 +2083,11 @@ function media_upload_header() {
  *
  * @global string $type
  * @global string $tab
- * @global bool   $is_IE
- * @global bool   $is_opera
  *
  * @param array $errors
  */
 function media_upload_form( $errors = null ) {
-	global $type, $tab, $is_IE, $is_opera;
+	global $type, $tab;
 
 	if ( ! _device_can_upload() ) {
 		echo '<p>' . sprintf(
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 09065f6a02..dad2e3e774 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.4-alpha-56503';
+$wp_version = '6.4-alpha-56504';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.