diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 131b4737c..071d6fb26 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -13255,13 +13255,13 @@ void Plater::post_process_string_object_exception(StringObjectException &err)
                             filament_name = filament_it->alias;
                         } else {
                             auto preset = preset_bundle->filaments.get_preset_base(*filament_it);
-                            if (!preset->alias.empty()) {
+                            if (preset && !preset->alias.empty()) {
                                 filament_name = preset->alias;
                             } else {
                                 char target = '@';
-                                size_t pos = preset->name.find(target);
+                                size_t pos    = filament_name.find(target);
                                 if (pos != std::string::npos) {
-                                    filament_name = preset->name.substr(0, pos - 1);
+                                    filament_name = filament_name.substr(0, pos - 1);
                                 }
                             }
                         }