diff --git a/lib/Tasks/Sending.php b/lib/Tasks/Sending.php
index 6b58b3d5e0..dd13066e0f 100644
--- a/lib/Tasks/Sending.php
+++ b/lib/Tasks/Sending.php
@@ -135,7 +135,7 @@ class Sending {
 
   public function updateProcessedSubscribers(array $processed_subscribers) {
     $this->task_subscribers->updateProcessedSubscribers($processed_subscribers);
-    $this->updateCount();
+    return $this->updateCount()->getErrors() === false;
   }
 
   function updateCount() {