diff --git a/apps/maarch_entreprise/tools/mails/htmlMimeMail.php b/apps/maarch_entreprise/tools/mails/htmlMimeMail.php
index d6d7e5e0c01c938659254c759225b60582b7d6fb..fa2233dcede164a8199625bfd935034ec8a11e06 100755
--- a/apps/maarch_entreprise/tools/mails/htmlMimeMail.php
+++ b/apps/maarch_entreprise/tools/mails/htmlMimeMail.php
@@ -719,7 +719,7 @@ class htmlMimeMail
             case 'mail':
                 $subject = '';
                 if (!empty($this->headers['Subject'])) {
-                    $subject = $this->_encodeHeader($this->header['Subject'], $this->build_params['head_charset']);
+                    $subject = $this->_encodeHeader($this->headers['Subject'], $this->build_params['head_charset']);
                     unset($this->headers['Subject']);
                 }