diff --git a/src/Api/Mailboxes.php b/src/Api/Mailboxes.php
index 5c3cf01..ecad77b 100644
--- a/src/Api/Mailboxes.php
+++ b/src/Api/Mailboxes.php
@@ -20,7 +20,7 @@ use Mailgun\Model\Mailboxes\UpdateResponse;
 class Mailboxes extends HttpApi
 {
     const MIN_PASSWORD_LENGTH = 5;
-    
+
     /**
      * @param string $domain
      * @param array  $parameters
@@ -81,7 +81,7 @@ class Mailboxes extends HttpApi
     }
 
     /**
-     * @param string $address
+     * @param string $domain
      * @param string $mailbox
      *
      * @return DeleteResponse
diff --git a/src/Mailgun.php b/src/Mailgun.php
index a0d667e..05c93d1 100644
--- a/src/Mailgun.php
+++ b/src/Mailgun.php
@@ -146,6 +146,6 @@ class Mailgun
 
     public function mailboxes(): Api\Mailboxes
     {
-        return new Api\Mailboxes($this->httpClient, $this->requestBuilder, $this->hydrator, $this->apiKey);
+        return new Api\Mailboxes($this->httpClient, $this->requestBuilder, $this->hydrator);
     }
 }