diff --git a/src/Discord.php b/src/Discord.php
index 722d989..b0d612d 100644
--- a/src/Discord.php
+++ b/src/Discord.php
@@ -32,13 +32,14 @@ class Discord
     public function __construct(
         private string $token,
         private LoggerInterface $logger = new NullLogger(),
-        ?LoopInterface $loop = null
+        ?LoopInterface $loop = null,
+        ?DataMapper $dataMapper = null,
     ) {
         $this->logger->info('Fenrir initialized. Discriminators > usernames');
 
         $this->loop = $loop ?? Loop::get();
 
-        $this->mapper = new DataMapper($this->logger);
+        $this->mapper = $dataMapper ?? new DataMapper(new NullLogger());
     }
 
     /**