diff --git a/Tests/MatterControl.Tests/MatterControl/ReleaseBuildTests.cs b/Tests/MatterControl.Tests/MatterControl/ReleaseBuildTests.cs
index ab1fc5be9..4f28657af 100644
--- a/Tests/MatterControl.Tests/MatterControl/ReleaseBuildTests.cs
+++ b/Tests/MatterControl.Tests/MatterControl/ReleaseBuildTests.cs
@@ -11,6 +11,7 @@ using System.Reflection;
 using System.Xml.Linq;
 using System.Threading.Tasks;
 using System.Threading;
+using MatterHackers.MatterControl;
 
 namespace MatterControl.Tests
 {