diff --git a/library/config_util.py b/library/config_util.py
index 3ab0de11..ac8aca06 100644
--- a/library/config_util.py
+++ b/library/config_util.py
@@ -105,6 +105,7 @@ class ControlNetSubsetParams(BaseSubsetParams):
     conditioning_data_dir: str = None
     caption_extension: str = ".caption"
     cache_info: bool = False
+    preference: bool = False
 
 
 @dataclass