diff --git a/src/danog/MadelineProto/MTProtoTools/CallHandler.php b/src/danog/MadelineProto/MTProtoTools/CallHandler.php
index b4217093..01db27c5 100644
--- a/src/danog/MadelineProto/MTProtoTools/CallHandler.php
+++ b/src/danog/MadelineProto/MTProtoTools/CallHandler.php
@@ -66,9 +66,14 @@ trait CallHandler
             }
             unset($aargs['queue']);
         }
+        if (isset($aargs['serialized'])) {
+            $serialized = $args;
+        } else {
+            $serialized = $this->serialize_method($method, $args);
+        }
 
-        $serialized = $this->serialize_method($method, $args);
         $content_related = $this->content_related($method);
+
         $type = $this->methods->find_by_method($method)['type'];
 
         if (isset($queue)) {
diff --git a/src/danog/MadelineProto/SecretChats/MessageHandler.php b/src/danog/MadelineProto/SecretChats/MessageHandler.php
index 73ed290a..0cc17842 100644
--- a/src/danog/MadelineProto/SecretChats/MessageHandler.php
+++ b/src/danog/MadelineProto/SecretChats/MessageHandler.php
@@ -38,7 +38,7 @@ trait MessageHandler
         $message = $this->pack_unsigned_int(strlen($message)).$message;
 
         $message_key = substr(sha1($message, true), -16);
-        list($aes_key, $aes_iv) = $this->aes_calculate($message_key, $this->secret_chats[$chat_id]['key']['auth_key'], 'to server');
+        list($aes_key, $aes_iv) = $this->old_aes_calculate($message_key, $this->secret_chats[$chat_id]['key']['auth_key'], 'to server');
 
         $message .= $this->random($this->posmod(-strlen($message), 16));
 
@@ -73,7 +73,7 @@ trait MessageHandler
         }
         $message_key = substr($message['message']['bytes'], 8, 16);
         $encrypted_data = substr($message['message']['bytes'], 24);
-        list($aes_key, $aes_iv) = $this->aes_calculate($message_key, $this->secret_chats[$message['message']['chat_id']][$old ? 'old_key' : 'key']['auth_key'], 'to server');
+        list($aes_key, $aes_iv) = $this->old_aes_calculate($message_key, $this->secret_chats[$message['message']['chat_id']][$old ? 'old_key' : 'key']['auth_key'], 'to server');
         $decrypted_data = $this->ige_decrypt($encrypted_data, $aes_key, $aes_iv);
         $message_data_length = unpack('V', substr($decrypted_data, 0, 4))[1];
         if ($message_data_length > strlen($decrypted_data)) {