diff --git a/MediaBrowser.Controller/Entities/CollectionFolder.cs b/MediaBrowser.Controller/Entities/CollectionFolder.cs
index 351385533..0d6bed90b 100644
--- a/MediaBrowser.Controller/Entities/CollectionFolder.cs
+++ b/MediaBrowser.Controller/Entities/CollectionFolder.cs
@@ -33,6 +33,7 @@ namespace MediaBrowser.Controller.Entities
         /// Allow different display preferences for each collection folder
         /// </summary>
         /// <value>The display prefs id.</value>
+        [IgnoreDataMember]
         public override Guid DisplayPreferencesId
         {
             get
diff --git a/MediaBrowser.Controller/Entities/GameSystem.cs b/MediaBrowser.Controller/Entities/GameSystem.cs
index 63af8082a..69cb5e974 100644
--- a/MediaBrowser.Controller/Entities/GameSystem.cs
+++ b/MediaBrowser.Controller/Entities/GameSystem.cs
@@ -1,4 +1,5 @@
-using MediaBrowser.Model.Configuration;
+using System.Runtime.Serialization;
+using MediaBrowser.Model.Configuration;
 using System;
 
 namespace MediaBrowser.Controller.Entities
@@ -13,6 +14,7 @@ namespace MediaBrowser.Controller.Entities
         /// Default is based on the type for everything except actual generic folders.
         /// </summary>
         /// <value>The display prefs id.</value>
+        [IgnoreDataMember]
         public override Guid DisplayPreferencesId
         {
             get