diff --git a/api/services/app_service.py b/api/services/app_service.py
index 4d93a010f9..bbb72b8d6d 100644
--- a/api/services/app_service.py
+++ b/api/services/app_service.py
@@ -66,7 +66,7 @@ class AppService:
         app_template = default_app_templates[app_mode]
 
         # get model config
-        default_model_config = app_template.get('model_config')
+        default_model_config = app_template.get('model_config').copy()
         if default_model_config and 'model' in default_model_config:
             # get model provider
             model_manager = ModelManager()
@@ -99,7 +99,6 @@ class AppService:
             else:
                 default_model_dict = default_model_config['model']
 
-            default_model_dict = default_model_dict.copy()
             default_model_config['model'] = json.dumps(default_model_dict)
 
         app = App(**app_template['app'])