diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index f76d44cef..9388d13a8 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -13199,6 +13199,7 @@ void Plater::on_filaments_change(size_t num_filaments)
     sidebar().obj_list()->update_objects_list_filament_column(num_filaments);
 
     Slic3r::GUI::PartPlateList &plate_list = get_partplate_list();
+    plate_list.set_filament_count(num_filaments);
     for (int i = 0; i < plate_list.get_plate_count(); ++i) {
         PartPlate* part_plate = plate_list.get_plate(i);
         part_plate->update_first_layer_print_sequence(num_filaments);