diff --git a/brancheneinstufung2.py b/brancheneinstufung2.py
index a4294ff0..b8165f5e 100644
--- a/brancheneinstufung2.py
+++ b/brancheneinstufung2.py
@@ -157,9 +157,11 @@ def main():
                 process_ml_steps='ml_predict' in steps_to_run_set
             )
         elif selected_mode == "alignment":
-            alignment_demo(sheet_handler.sheet)
+            # NEU: Übergebe die gesamte sheet_handler Instanz
+            alignment_demo(sheet_handler)
         elif selected_mode == "train_technician_model":
             data_processor.train_technician_model()
+
         elif hasattr(data_processor, f"process_{selected_mode}"):
             # Dynamischer Aufruf für die meisten Batch-Modi
             method_to_call = getattr(data_processor, f"process_{selected_mode}")