diff --git a/src/slic3r/GUI/DeviceManager.cpp b/src/slic3r/GUI/DeviceManager.cpp
index 630efcf66..5ec6f6733 100644
--- a/src/slic3r/GUI/DeviceManager.cpp
+++ b/src/slic3r/GUI/DeviceManager.cpp
@@ -2308,6 +2308,10 @@ void MachineObject::reset()
     extruder_axis_status = LOAD;
     nozzle_diameter = 0.0f;
 
+    // reset print_json
+    json empty_j;
+    print_json.diff2all_base_reset(empty_j);
+
     vt_tray.reset();
 
     subtask_ = nullptr;