diff --git a/src/PHPMailer.php b/src/PHPMailer.php
index afffed074..895c8b7d1 100644
--- a/src/PHPMailer.php
+++ b/src/PHPMailer.php
@@ -1892,7 +1892,7 @@ protected function mailSend($header, $body)
             $toArr[] = $this->addrFormat($toaddr);
         }
         $to = trim(implode(', ', $toArr));
-        
+
         //If there are no To-addresses (e.g. when sending only to BCC-addresses)
         //the following should be added to get a correct DKIM-signature.
         //Compare with $this->preSend()