diff --git a/src/Notification/Event/Sending.php b/src/Notification/Event/Sending.php
index 5633ada9a..43f6e1b83 100644
--- a/src/Notification/Event/Sending.php
+++ b/src/Notification/Event/Sending.php
@@ -36,6 +36,6 @@ class Sending
     public function __construct(BlueprintInterface $blueprint, array &$users)
     {
         $this->blueprint = $blueprint;
-        $this->users = $users;
+        $this->users = &$users;
     }
 }