diff --git a/language/phpmailer.lang-es.php b/language/phpmailer.lang-es.php
index 35ce5b8e..c845d129 100644
--- a/language/phpmailer.lang-es.php
+++ b/language/phpmailer.lang-es.php
@@ -35,3 +35,4 @@ $PHPMAILER_LANG['smtp_detail']          = 'Detalle: ';
 $PHPMAILER_LANG['smtp_error']           = 'Error del servidor SMTP: ';
 $PHPMAILER_LANG['variable_set']         = 'No se pudo configurar la variable: ';
 $PHPMAILER_LANG['imap_recommended']     = 'No se recomienda usar el analizador de direcciones simplificado. Instala la extensión IMAP de PHP para un análisis RFC822 más completo.';
+$PHPMAILER_LANG['deprecated_argument']  = 'El argumento $deprecatedArg ha quedado obsoleto';
diff --git a/src/PHPMailer.php b/src/PHPMailer.php
index 7a0e750a..16f079ad 100644
--- a/src/PHPMailer.php
+++ b/src/PHPMailer.php
@@ -1246,7 +1246,7 @@ class PHPMailer
     public static function parseAddresses($addrstr, $deprecatedArg = null, $charset = self::CHARSET_ISO88591)
     {
         if ($deprecatedArg !== null) {
-            trigger_error("Argument \$deprecatedArg is deprecated", E_USER_DEPRECATED);
+            trigger_error(self::lang('deprecated_argument'), E_USER_DEPRECATED);
         }
         $addresses = [];
         if (function_exists('imap_rfc822_parse_adrlist')) {
@@ -2478,6 +2478,7 @@ class PHPMailer
             'no_smtputf8' => 'Server does not support SMTPUTF8 needed to send to Unicode addresses',
             'imap_recommended' => 'Using simplified address parser is not recommended. ' .
                 'Install the PHP IMAP extension for full RFC822 parsing.',
+            'deprecated_argument' => 'Argument $deprecatedArg is deprecated',
         ];
         if (empty($lang_path)) {
             //Calculate an absolute path so it can work if CWD is not here