diff --git a/dotNetRDF.Data.Virtuoso.Tests/Storage/Async/BaseAsyncTests.cs b/dotNetRDF.Data.Virtuoso.Tests/Storage/Async/BaseAsyncTests.cs
index 8adf4e53d..68bbd6998 100644
--- a/dotNetRDF.Data.Virtuoso.Tests/Storage/Async/BaseAsyncTests.cs
+++ b/dotNetRDF.Data.Virtuoso.Tests/Storage/Async/BaseAsyncTests.cs
@@ -26,13 +26,10 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using System.Text;
 using System.Threading;
-using VDS.RDF.Core;
 using Xunit;
 using VDS.RDF.Parsing;
 using VDS.RDF.Query;
-using VDS.RDF.Storage;
 
 namespace VDS.RDF.Storage
 {
@@ -51,7 +48,6 @@ public abstract class BaseAsyncTests
         /// Method to be implemented by derived classes to obtain the storage provider to test
         /// </summary>
         /// <returns></returns>
-        /// <r
         protected abstract IAsyncStorageProvider GetAsyncProvider();
 
         protected void Fail(IAsyncStorageProvider provider, String msg)