diff --git a/src/slic3r/GUI/DeviceManager.cpp b/src/slic3r/GUI/DeviceManager.cpp
index 486def05f..403fa9d13 100644
--- a/src/slic3r/GUI/DeviceManager.cpp
+++ b/src/slic3r/GUI/DeviceManager.cpp
@@ -3017,11 +3017,13 @@ int MachineObject::parse_json(std::string payload)
                             else if (jj["errno"].get<int>() == -4) {
                                  text = _L("When you set the chamber temperature below 40\u2103, the chamber temperature control will not be activated. And the target chamber temperature will automatically be set to 0\u2103.");
                             }
+                            if(!text.empty()){
 #if __WXOSX__
                             set_ctt_dlg(text);
 #else
                             GUI::wxGetApp().show_dialog(text);
 #endif
+                            }
                         }
                     }
                 }