diff --git a/src/libslic3r/PresetBundle.cpp b/src/libslic3r/PresetBundle.cpp
index 0bf9c7bba..2c9a51901 100644
--- a/src/libslic3r/PresetBundle.cpp
+++ b/src/libslic3r/PresetBundle.cpp
@@ -329,7 +329,7 @@ Semver PresetBundle::get_vendor_profile_version(std::string vendor_name)
 std::optional<FilamentBaseInfo> PresetBundle::get_filament_by_filament_id(const std::string& filament_id) const
 {
     if (filament_id.empty())
-        return {};
+        return std::nullopt;
 
     // basic filament info should be same in the parent preset and child preset
     // so just match the filament id is enough
@@ -355,7 +355,7 @@ std::optional<FilamentBaseInfo> PresetBundle::get_filament_by_filament_id(const
             return info;
         }
     }
-    return {};
+    return std::nullopt;
 }
 
 //BBS: load project embedded presets
diff --git a/src/libslic3r/PresetBundle.hpp b/src/libslic3r/PresetBundle.hpp
index 8f945af70..6a9bee8ba 100644
--- a/src/libslic3r/PresetBundle.hpp
+++ b/src/libslic3r/PresetBundle.hpp
@@ -55,10 +55,10 @@ struct FilamentBaseInfo
     std::string filament_id;
     std::string filament_type;
     std::string vendor;
-    int nozzle_temp_range_low;
-    int nozzle_temp_range_high;
-    bool is_support;
-    bool is_system;
+    int nozzle_temp_range_low{ 220 };
+    int nozzle_temp_range_high{ 220 };
+    bool is_support{ false };
+    bool is_system{ true };
 };
 
 // Bundle of Print + Filament + Printer presets.
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index e6ec9cb70..49f2b5ae6 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -2834,8 +2834,11 @@ std::map<int, DynamicPrintConfig> Sidebar::build_filament_ams_list(MachineObject
         tray_config.set_key_value("filament_colour", new ConfigOptionStrings{into_u8(wxColour("#" + tray.color).GetAsString(wxC2S_HTML_SYNTAX))});
         tray_config.set_key_value("filament_exist", new ConfigOptionBools{tray.is_exists});
         tray_config.set_key_value("filament_multi_colors", new ConfigOptionStrings{});
-        auto info = wxGetApp().preset_bundle->get_filament_by_filament_id(tray.setting_id);
-        tray_config.set_key_value("filament_is_support", new ConfigOptionBools{ info ? info->is_support : false });
+        std::optional<FilamentBaseInfo> info;
+        if (wxGetApp().preset_bundle) {
+            info = wxGetApp().preset_bundle->get_filament_by_filament_id(tray.setting_id);
+        }
+        tray_config.set_key_value("filament_is_support", new ConfigOptionBools{ info.has_value() ? info->is_support : false});
         for (int i = 0; i < tray.cols.size(); ++i) {
             tray_config.opt<ConfigOptionStrings>("filament_multi_colors")->values.push_back(into_u8(wxColour("#" + tray.cols[i]).GetAsString(wxC2S_HTML_SYNTAX)));
         }