diff --git a/resources/printers/O1E.json b/resources/printers/O1E.json
index 404054d43d..23a8649cd3 100644
--- a/resources/printers/O1E.json
+++ b/resources/printers/O1E.json
@@ -60,6 +60,7 @@
 			"support_chamber_temp_switch_heating": 40,
 			"support_extrusion_cali": false,
 			"support_user_preset": false,
+			"support_refresh_nozzle": true,
 			"support_ams_ext_mix_print": true
 		},
 		"model_id": "O1E",
diff --git a/src/slic3r/GUI/DeviceCore/DevNozzleSystem.h b/src/slic3r/GUI/DeviceCore/DevNozzleSystem.h
index 7b68ef551b..1dbff547b2 100644
--- a/src/slic3r/GUI/DeviceCore/DevNozzleSystem.h
+++ b/src/slic3r/GUI/DeviceCore/DevNozzleSystem.h
@@ -23,6 +23,12 @@ namespace Slic3r
        friend class DevNozzleSystemParser;
    public:
        DevNozzleSystem(MachineObject* owner) : m_owner(owner) {}
+   private:
+       enum Status : int
+       {
+           NOZZLE_SYSTEM_IDLE = 0,
+           NOZZLE_SYSTEM_REFRESHING = 1,
+       };
 
    public:
        bool                            ContainsNozzle(int id) const { return m_nozzles.find(id) != m_nozzles.end(); }