diff --git a/Application/Controller/Admin/MailConfigCheck.php b/Application/Controller/Admin/MailConfigCheck.php
index 79f3e4a..7c42f99 100644
--- a/Application/Controller/Admin/MailConfigCheck.php
+++ b/Application/Controller/Admin/MailConfigCheck.php
@@ -101,6 +101,7 @@ class MailConfigCheck extends AdminDetailsController
             $this->addTplParam('mailer', $mail->getMailer());
             $this->addTplParam('communication', $communication);
         } catch (Exception $e) {
+            ob_end_clean();
             Registry::getUtilsView()->addErrorToDisplay($e);
         }
     }