diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index 01961271c6..841db411c7 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -6835,7 +6835,16 @@ void GUI_App::load_current_presets(bool active_preset_combox/*= false*/, bool ch
     if (check_printer_presets_)
         check_printer_presets();
 
-    PrinterTechnology printer_technology = preset_bundle->printers.get_edited_preset().printer_technology();
+    auto& edited_printer_preset = preset_bundle->printers.get_edited_preset();
+    PrinterTechnology printer_technology = edited_printer_preset.printer_technology();
+    // ORCA: Sync filament count with the printer's nozzle count before loading presets for multi-tool printers.
+    // This ensures filament_presets vector is properly sized when combo boxes are created/updated.
+    if (printer_technology == ptFFF && !edited_printer_preset.config.opt_bool("single_extruder_multi_material")) {
+        auto* nozzle_diameter = edited_printer_preset.config.option<ConfigOptionFloats>("nozzle_diameter");
+        if (nozzle_diameter) {
+            preset_bundle->set_num_filaments(nozzle_diameter->values.size());
+        }
+    }
 	this->plater()->set_printer_technology(printer_technology);
     for (Tab *tab : tabs_list)
 		if (tab->supports_printer_technology(printer_technology)) {