diff --git a/retriever/retriever.php b/retriever/retriever.php
index 7d1229e6..7b9a7bf4 100644
--- a/retriever/retriever.php
+++ b/retriever/retriever.php
@@ -22,6 +22,7 @@ use Friendica\Model\Item;
 use Friendica\Model\Post;
 use Friendica\Util\DateTimeFormat;
 use Friendica\DI;
+use Friendica\App;
 
 /**
  * @brief Installation hook for retriever plugin