diff --git a/src/Oauth2/Authentication/Server.php b/src/Oauth2/Authentication/Server.php
index 1e6ee1f5..709805fa 100644
--- a/src/Oauth2/Authentication/Server.php
+++ b/src/Oauth2/Authentication/Server.php
@@ -97,7 +97,7 @@ class Server
     public function __construct($options = null)
     {
         if ($options !== null) {
-            $this->options = array_merge($this->config, $options);
+            $this->config = array_merge($this->config, $options);
         }
     }