diff --git a/backend/app/routers/settings.py b/backend/app/routers/settings.py
index 027b540..d6f95a0 100644
--- a/backend/app/routers/settings.py
+++ b/backend/app/routers/settings.py
@@ -21,6 +21,7 @@ from app.core.app_config import (
     load_all_system_prompts,
     load_all_themes,
     load_appearance_config,
+    save_appearance_config,
     load_doc_service_config,
     load_doc_service_config_masked,
     save_ai_service_config,