diff --git a/MatterControlLib/PartPreviewWindow/GCode3DWidget.cs b/MatterControlLib/PartPreviewWindow/GCodePanel.cs
similarity index 98%
rename from MatterControlLib/PartPreviewWindow/GCode3DWidget.cs
rename to MatterControlLib/PartPreviewWindow/GCodePanel.cs
index 350bfdc8e..aa8f1ff87 100644
--- a/MatterControlLib/PartPreviewWindow/GCode3DWidget.cs
+++ b/MatterControlLib/PartPreviewWindow/GCodePanel.cs
@@ -1,5 +1,5 @@
 /*
-Copyright (c) 2018, Lars Brubaker, John Lewin
+Copyright (c) 2019, Lars Brubaker, John Lewin
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -28,7 +28,6 @@ either expressed or implied, of the FreeBSD Project.
 */
 
 using System;
-using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 using MatterHackers.Agg;
@@ -36,7 +35,6 @@ using MatterHackers.Agg.UI;
 using MatterHackers.Localizations;
 using MatterHackers.MatterControl.ConfigurationPage;
 using MatterHackers.MatterControl.CustomWidgets;
-using MatterHackers.MatterControl.SlicerConfiguration;
 
 namespace MatterHackers.MatterControl.PartPreviewWindow
 {