diff --git a/src/OAuth2/Database.php b/src/OAuth2/Database.php
index 2c8a1a28..1ee6b928 100644
--- a/src/OAuth2/Database.php
+++ b/src/OAuth2/Database.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace oauth2server;
+namespace OAuth2;
 
 interface Database
 {
diff --git a/src/OAuth2/Server.php b/src/OAuth2/Server.php
index 857daefe..b40272f4 100644
--- a/src/OAuth2/Server.php
+++ b/src/OAuth2/Server.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace oauth2server;
+namespace OAuth2;
 
 class OAuthServerClientException extends \Exception {}