diff --git a/plugins/providers/virtualbox/action/import_master.rb b/plugins/providers/virtualbox/action/import_master.rb
index d790cf4e1..6e2fc28b6 100644
--- a/plugins/providers/virtualbox/action/import_master.rb
+++ b/plugins/providers/virtualbox/action/import_master.rb
@@ -52,7 +52,11 @@ module VagrantPlugins
               " (id=#{env[:clone_id]}) - skipping import step.")
             return
           else
-            env.delete(:clone_id)
+            if env.delete(:clone_id)
+              @logger.info("Deleting previous reference for master VM" +
+                "'#{env[:machine].box.name}' (id=#{env[:clone_id]}) - " +
+                "maybe it was removed manually")
+            end
           end
 
           env[:ui].info(I18n.t("vagrant.actions.vm.clone.setup_master"))