diff --git a/tests/SharpCompress.Test/Xz/XZBlockTests.cs b/tests/SharpCompress.Test/Xz/XZBlockTests.cs
index f2ac9b68..0d6c7d9a 100644
--- a/tests/SharpCompress.Test/Xz/XZBlockTests.cs
+++ b/tests/SharpCompress.Test/Xz/XZBlockTests.cs
@@ -1,5 +1,6 @@
 using System.IO;
 using System.Text;
+using SharpCompress.Common;
 using SharpCompress.Compressors.Xz;
 using Xunit;