diff --git a/src/slic3r/GUI/CalibrationWizardPresetPage.cpp b/src/slic3r/GUI/CalibrationWizardPresetPage.cpp
index d5483030b..906a118b9 100644
--- a/src/slic3r/GUI/CalibrationWizardPresetPage.cpp
+++ b/src/slic3r/GUI/CalibrationWizardPresetPage.cpp
@@ -1492,6 +1492,9 @@ bool CalibrationPresetPage::is_filaments_compatiable(const std::map<int, Preset*
 
 bool CalibrationPresetPage::is_filament_in_blacklist(int tray_id, Preset* preset, std::string& error_tips)
 {
+    if (!curr_obj)
+        return true;
+
     int ams_id;
     int slot_id;
     int out_tray_id;
@@ -2605,6 +2608,10 @@ void CalibrationPresetPage::update_multi_extruder_filament_combobox(const std::s
         item_size = 1;
     }
 
+    if (ams_id_int >= 128 && ams_id_int < 153) {  // N3S
+        item_size = 1;
+    }
+
     for (int i = 0; i < 4; i++) {
         if (i < item_size) {
             if (nozzle_id == 0)