diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index ca730c7b3..591d9d7d4 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -4902,7 +4902,7 @@ std::vector<size_t> Plater::priv::load_files(const std::vector<fs::path>& input_
                         int size = extruderIds.size() == 0 ? 0 : *(extruderIds.rbegin());
 
                         int filament_size = sidebar->combos_filament().size();
-                        while (filament_size < 16 && filament_size < size) {
+                        while (filament_size < (int)EnforcerBlockerType::ExtruderMax && filament_size < size) {
                             int         filament_count = filament_size + 1;
                             wxColour    new_col        = Plater::get_next_color_for_filament();
                             std::string new_color      = new_col.GetAsString(wxC2S_HTML_SYNTAX).ToStdString();