diff --git a/retriever/retriever.php b/retriever/retriever.php
index 6e499d94..8e721eaf 100644
--- a/retriever/retriever.php
+++ b/retriever/retriever.php
@@ -88,10 +88,9 @@ function retriever_module() {}
 /**
  * @brief Admin page hook for retriever plugin
  *
- * @param App $a App object (unused)
  * @param string $o HTML to append content to (by ref)
  */
-function retriever_addon_admin(App $a, string &$o) {
+function retriever_addon_admin(string &$o) {
 	$template = Renderer::getMarkupTemplate('admin.tpl', 'addon/retriever/');
 
 	$downloads_per_cron = DI::config()->get('retriever', 'downloads_per_cron');
@@ -986,10 +985,9 @@ function retriever_contact_photo_menu(array &$args) {
 /**
  * @brief Hook for processing new incoming items
  *
- * @param App $a The App object (by ref)
  * @param array $item New item, which has not yet been inserted into database (by ref)
  */
-function retriever_post_remote_hook(App &$a, array &$item) {
+function retriever_post_remote_hook(array &$item) {
 	Logger::info('retriever_post_remote_hook: ' . $item['uri'] . ' ' . $item['uid'] . ' ' . $item['contact-id']);
 
 	$retriever_rule = get_retriever_rule($item['contact-id'], $item["uid"], false);