diff --git a/builder/virtualbox/step_attach_iso.go b/builder/virtualbox/step_attach_iso.go
index 502fa3d0e..ee45647b1 100644
--- a/builder/virtualbox/step_attach_iso.go
+++ b/builder/virtualbox/step_attach_iso.go
@@ -49,7 +49,6 @@ func (s *stepAttachISO) Cleanup(state multistep.StateBag) {
 	}
 
 	driver := state.Get("driver").(Driver)
-	ui := state.Get("ui").(packer.Ui)
 	vmName := state.Get("vmName").(string)
 
 	command := []string{