diff --git a/astrbot/api/event/filter/__init__.py b/astrbot/api/event/filter/__init__.py
index 6dffbb4e6..c53536634 100644
--- a/astrbot/api/event/filter/__init__.py
+++ b/astrbot/api/event/filter/__init__.py
@@ -29,7 +29,7 @@ __all__ = [
     'PlatformAdapterTypeFilter',
     'PlatformAdapterType',
     'PermissionTypeFilter',
-    'register_custom_permission_type',
+    'custom_permission_type',
     'PermissionType',
     'on_llm_request',
     'llm_tool',