diff --git a/src/Mailgun/Model/Domain/AbstractDomainResponse.php b/src/Mailgun/Model/Domain/AbstractDomainResponse.php
index 73de631..0b7b67d 100644
--- a/src/Mailgun/Model/Domain/AbstractDomainResponse.php
+++ b/src/Mailgun/Model/Domain/AbstractDomainResponse.php
@@ -68,7 +68,7 @@ abstract class AbstractDomainResponse implements ApiResponse
             }
         }
 
-        return new self($domain, $rx, $tx, $message);
+        return new static($domain, $rx, $tx, $message);
     }
 
     /**