diff --git a/library/config_util.py b/library/config_util.py
index 7c5b80792..10a2ac9e2 100644
--- a/library/config_util.py
+++ b/library/config_util.py
@@ -80,7 +80,6 @@ class BaseSubsetParams:
     caption_tag_dropout_rate: float = 0.0   
     token_warmup_min: int = 1
     token_warmup_step: float = 0
-    sample_weight: bool = False
 
 @dataclass
 class DreamBoothSubsetParams(BaseSubsetParams):
@@ -198,7 +197,6 @@ def __validate_and_convert_scalar_or_twodim(klass, value: Union[float, Sequence]
         "token_warmup_step": Any(float, int),
         "caption_prefix": str,
         "caption_suffix": str,
-        "sample_weight": bool, 
     }
     # DO means DropOut
     DO_SUBSET_ASCENDABLE_SCHEMA = {