diff --git a/wp-admin/admin-ajax.php b/wp-admin/admin-ajax.php
index 46c09508d..cca17b809 100644
--- a/wp-admin/admin-ajax.php
+++ b/wp-admin/admin-ajax.php
@@ -34,7 +34,7 @@ send_nosniff_header();
 
 do_action( 'admin_init' );
 
-$core_actions_get = array( 'fetch-list', 'ajax-tag-search', 'compression-test', 'imgedit-preview', 'oembed_cache' );
+$core_actions_get = array( 'fetch-list', 'ajax-tag-search', 'wp-compression-test', 'imgedit-preview', 'oembed_cache' );
 
 $core_actions_post = array(
 	'oembed_cache', 'image-editor', 'delete-comment', 'delete-tag', 'delete-link',