diff --git a/websocket-sharp/Net/CookieCollection.cs b/websocket-sharp/Net/CookieCollection.cs
index 8df6d52e..62ef9c46 100644
--- a/websocket-sharp/Net/CookieCollection.cs
+++ b/websocket-sharp/Net/CookieCollection.cs
@@ -190,7 +190,7 @@ namespace WebSocketSharp.Net
     /// <value>
     /// An <see cref="Object"/> used to synchronize access to the collection.
     /// </value>
-    public Object SyncRoot {
+    public object SyncRoot {
       get {
         return _sync;
       }