diff --git a/src/Plugins/BotSharp.Plugin.MongoStorage/MongoStoragePlugin.cs b/src/Plugins/BotSharp.Plugin.MongoStorage/MongoStoragePlugin.cs
index be4bd667..e41704b8 100644
--- a/src/Plugins/BotSharp.Plugin.MongoStorage/MongoStoragePlugin.cs
+++ b/src/Plugins/BotSharp.Plugin.MongoStorage/MongoStoragePlugin.cs
@@ -19,7 +19,6 @@ public class MongoStoragePlugin : IBotSharpPlugin
 
         if (dbSettings.Default == "MongoRepository")
         {
-            BsonSerializer.RegisterSerializer(new GuidSerializer(GuidRepresentation.Standard));
             services.AddScoped((IServiceProvider x) =>
             {
                 var dbSettings = x.GetRequiredService<BotSharpDatabaseSettings>();