diff --git a/MediaBrowser.Model/Session/ClientCapabilities.cs b/MediaBrowser.Model/Session/ClientCapabilities.cs
index 0682ac35e..0ba9988bb 100644
--- a/MediaBrowser.Model/Session/ClientCapabilities.cs
+++ b/MediaBrowser.Model/Session/ClientCapabilities.cs
@@ -1,4 +1,5 @@
 using MediaBrowser.Model.Dlna;
+using System;
 
 namespace MediaBrowser.Model.Session
 {