diff --git a/MatterControlLib/PartPreviewWindow/ViewStyleButton.cs b/MatterControlLib/PartPreviewWindow/ViewStyleButton.cs
index e2952ede9..c1ee8cd11 100644
--- a/MatterControlLib/PartPreviewWindow/ViewStyleButton.cs
+++ b/MatterControlLib/PartPreviewWindow/ViewStyleButton.cs
@@ -59,7 +59,7 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 				[RenderTypes.Shaded] = AggContext.StaticData.LoadIcon("view_shaded.png", 16, 16, theme.InvertIcons),
 				[RenderTypes.Outlines] = AggContext.StaticData.LoadIcon("view_outlines.png", 16, 16, theme.InvertIcons),
 				[RenderTypes.Polygons] = AggContext.StaticData.LoadIcon("view_polygons.png", 16, 16, theme.InvertIcons),
-				[RenderTypes.Manifold] = AggContext.StaticData.LoadIcon("view_polygons.png", 16, 16, theme.InvertIcons),
+				[RenderTypes.NonManifold] = AggContext.StaticData.LoadIcon("view_polygons.png", 16, 16, theme.InvertIcons),
 				[RenderTypes.Materials] = AggContext.StaticData.LoadIcon("view_materials.png", 16, 16, theme.InvertIcons),
 				[RenderTypes.Overhang] = AggContext.StaticData.LoadIcon("view_overhang.png", 16, 16, theme.InvertIcons),
 			};
@@ -122,12 +122,12 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 
 #if DEBUG
 			popupMenu.CreateBoolMenuItem(
-				"Manifold".Localize(),
+				"Non-Manifold".Localize(),
 				viewIcons[RenderTypes.Polygons],
-				() => sceneContext.ViewState.RenderType == RenderTypes.Manifold,
+				() => sceneContext.ViewState.RenderType == RenderTypes.NonManifold,
 				(isChecked) =>
 				{
-					sceneContext.ViewState.RenderType = RenderTypes.Manifold;
+					sceneContext.ViewState.RenderType = RenderTypes.NonManifold;
 				},
 				useRadioStyle: true,
 				siblingRadioButtonList: siblingList);