diff --git a/src/Server.php b/src/Server.php
index dfb61303..9c8e21e7 100644
--- a/src/Server.php
+++ b/src/Server.php
@@ -97,7 +97,7 @@ class Server implements EmitterAwareInterface
      *
      * @return ResponseTypeInterface
      */
-    protected function getDefaultResponseType()
+    public function getDefaultResponseType()
     {
         if (!$this->defaultResponseType instanceof ResponseTypeInterface) {
             $this->defaultResponseType = new BearerTokenResponse(