--- a/lib/classes/Swift/SendmailTransport.php
+++ b/lib/classes/Swift/SendmailTransport.php
@@ -22,9 +22,12 @@ class Swift_SendmailTransport extends Swift_Transport_SendmailTransport
      */
     public function __construct($command = '/usr/sbin/sendmail -bs')
     {
-        \call_user_func_array(
-            [$this, 'Swift_Transport_SendmailTransport::__construct'],
-            Swift_DependencyContainer::getInstance()
+        $args = Swift_DependencyContainer::getInstance()
                 ->createDependenciesFor('transport.sendmail')
-            );
+        ;
+
+        // Call parent constructor directly to avoid deprecated callable format
+        $reflection = new \ReflectionClass('Swift_Transport_SendmailTransport');
+        $constructor = $reflection->getConstructor();
+        $constructor->invokeArgs($this, $args);

         $this->setCommand($command);
--- a/lib/classes/Swift/Message.php
+++ b/lib/classes/Swift/Message.php
@@ -43,9 +43,12 @@ class Swift_Message extends Swift_Mime_SimpleMessage
     public function __construct($subject = null, $body = null, $contentType = null, $charset = null)
     {
-        \call_user_func_array(
-            [$this, 'Swift_Mime_SimpleMessage::__construct'],
-            Swift_DependencyContainer::getInstance()
+        $args = Swift_DependencyContainer::getInstance()
                 ->createDependenciesFor('mime.message')
-            );
+        ;
+
+        // Call parent constructor directly to avoid deprecated callable format
+        $reflection = new \ReflectionClass('Swift_Mime_SimpleMessage');
+        $constructor = $reflection->getConstructor();
+        $constructor->invokeArgs($this, $args);

         if (!isset($charset)) {
             $charset = Swift_DependencyContainer::getInstance()