diff --git a/src/OAuth2/Storage/ClientEndpointInterface.php b/src/OAuth2/Storage/ClientEndpointInterface.php
deleted file mode 100644
index ae83eb93..00000000
--- a/src/OAuth2/Storage/ClientEndpointInterface.php
+++ /dev/null
@@ -1,8 +0,0 @@
-<?php
-
-namespace OAuth2\Storage;
-
-interface ClientEndpointInterface
-{
-    
-}
diff --git a/src/OAuth2/Storage/SessionScopeInterface.php b/src/OAuth2/Storage/SessionScopeInterface.php
deleted file mode 100644
index 3ea89f0d..00000000
--- a/src/OAuth2/Storage/SessionScopeInterface.php
+++ /dev/null
@@ -1,8 +0,0 @@
-<?php
-
-namespace OAuth2\Storage;
-
-interface SessionScopeInterface
-{
-    public function getScopes($session_id);
-}