diff --git a/app/routes/main.py b/app/routes/main.py
index d81fb5c..5e134e4 100644
--- a/app/routes/main.py
+++ b/app/routes/main.py
@@ -32,7 +32,7 @@ def serve_config_file(filename):
 @main_bp.route('/load_config/<filename>')
 def load_config(filename):
     global current_config
-    path = os.path.join(app.config['CONFIG_DIR'], filename)
+    path = os.path.join(current_app.config['CONFIG_DIR'], filename)
     
     if not os.path.exists(path):
         logger.error(f"Config nicht gefunden: {path}")