diff --git a/MatterControlLib/ApplicationView/ApplicationController.cs b/MatterControlLib/ApplicationView/ApplicationController.cs
index a540cb6e3..f21f977db 100644
--- a/MatterControlLib/ApplicationView/ApplicationController.cs
+++ b/MatterControlLib/ApplicationView/ApplicationController.cs
@@ -457,6 +457,9 @@ namespace MatterHackers.MatterControl
 			// Actually clear printer
 			ProfileManager.Instance.ClosePrinter(printer.Settings.ID);
 
+			// Shutdown the printer connection
+			printer.Connection.Disable();
+
 			if (allowChangedEvent)
 			{
 				if (this.Workspaces.FirstOrDefault(w => w.Printer?.Settings.ID == printer.Settings.ID) is PartWorkspace workspace)