diff --git a/core/src/UNAM/Tupa/Core/Jobs/Messages.php b/core/src/UNAM/Tupa/Core/Jobs/Messages.php
index 533a9f20c98309a84881da60fa5abaca82b88c9d..67c0e407ebd80334ea7d59f496a4c17fbb3f705a 100644
--- a/core/src/UNAM/Tupa/Core/Jobs/Messages.php
+++ b/core/src/UNAM/Tupa/Core/Jobs/Messages.php
@@ -90,11 +90,11 @@ class Messages
             }
         } catch (EmailNotValid $e) {
             $this->logger->error($e->getMessage());
-            return ['status' => 0, 'failures' => $failures];
+            return ['status' => 0, 'failures' => null];
         } catch (\Exception $e) {
             $this->logger->error($e->getMessage());
             $this->checkStateTransport($this->sfMailer->getTransport());
-            return ['status' => 0, 'failures' => $failures];
+            return ['status' => 0, 'failures' => null];
         }
     }