diff --git a/src/Mailgun/Mailgun.php b/src/Mailgun/Mailgun.php
index c34ab74..12816b6 100644
--- a/src/Mailgun/Mailgun.php
+++ b/src/Mailgun/Mailgun.php
@@ -18,7 +18,6 @@ use Mailgun\Messages\MessageBuilder;
 
 class Mailgun{
         
-    private $apiKey;
     protected $workingDomain;
     protected $restClient;