diff --git a/PartPreviewWindow/View3D/Gui3D/HeightValueDisplay.cs b/PartPreviewWindow/View3D/Gui3D/HeightValueDisplay.cs
index ac45c712d..5736d7d10 100644
--- a/PartPreviewWindow/View3D/Gui3D/HeightValueDisplay.cs
+++ b/PartPreviewWindow/View3D/Gui3D/HeightValueDisplay.cs
@@ -105,7 +105,7 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
 						Vector2 pointerBottom = new Vector2(startLineGroundPos.x + HorizontalLineLength / 2, yGround);
 						Vector2 pointerTop = new Vector2(startLineSelectionPos.x + HorizontalLineLength / 2, ySelection);
 
-						InteractionVolume.DrawMeasureLine(drawEvent.graphics2D, pointerBottom, pointerTop, RGBA_Bytes.Black, InteractionVolume.LineArrows.End);
+						InteractionVolume.DrawMeasureLine(drawEvent.graphics2D, pointerBottom, pointerTop, RGBA_Bytes.Black, LineArrows.End);
 					}
 				}
 			}