diff --git a/src/Core/Modules/NoteHandlerPlugin.php b/src/Core/Modules/NoteHandlerPlugin.php
index 6b8214253b..386259162d 100644
--- a/src/Core/Modules/NoteHandlerPlugin.php
+++ b/src/Core/Modules/NoteHandlerPlugin.php
@@ -19,6 +19,7 @@
 
 namespace App\Core\Modules;
 
+use App\Core\Event;
 use App\Core\Log;
 use App\Entity\Note;
 use App\Util\Common;