diff --git a/src/slic3r/GUI/SelectMachine.cpp b/src/slic3r/GUI/SelectMachine.cpp
index 416f047e194..4638a9a4f84 100644
--- a/src/slic3r/GUI/SelectMachine.cpp
+++ b/src/slic3r/GUI/SelectMachine.cpp
@@ -2579,7 +2579,7 @@ void SelectMachineDialog::on_ok_btn(wxCommandEvent &event)
     if (!obj_->nozzle_type.empty() && (m_print_type == PrintFromType::FROM_NORMAL)) {
         if (!is_same_nozzle_diameters(tag_nozzle_type, nozzle_diameter)) {
             has_slice_warnings = true;
-            is_printing_block  = true;
+            // is_printing_block  = true;  # Removed to allow nozzle overrides (to support non-standard nozzles)
             
             wxString nozzle_in_preset = wxString::Format(_L("nozzle in preset: %s %s"),nozzle_diameter, "");
             wxString nozzle_in_printer = wxString::Format(_L("nozzle memorized: %.2f %s"), obj_->nozzle_diameter, "");