diff --git a/docs/plans/2026-03-11-multi-vehicule.md b/docs/plans/2026-03-11-multi-vehicule.md
index 360cf83..f73c386 100644
--- a/docs/plans/2026-03-11-multi-vehicule.md
+++ b/docs/plans/2026-03-11-multi-vehicule.md
@@ -312,7 +312,7 @@ def _migrate_db(app):
     conn.close()
 
     with app.app_context():
-        engine = db.get_engine()
+        engine = db.engine
         if "motor_vehicle_id" not in columns:
             with engine.connect() as conn:
                 conn.execute(sa.text(