diff --git a/deepmd/dpmodel/fitting/property_fitting.py b/deepmd/dpmodel/fitting/property_fitting.py
index 3c7b90d785..fd8249cf25 100644
--- a/deepmd/dpmodel/fitting/property_fitting.py
+++ b/deepmd/dpmodel/fitting/property_fitting.py
@@ -31,6 +31,7 @@ def __init__(
         rcond: Optional[float] = None,
         trainable: Union[bool, List[bool]] = True,
         intensive: bool = False,
+        bias_method: str = "normal",
         resnet_dt: bool = True,
         numb_fparam: int = 0,
         numb_aparam: int = 0,
@@ -44,6 +45,7 @@ def __init__(
     ):
         self.task_dim = task_dim
         self.intensive = intensive
+        self.bias_method = bias_method
         super().__init__(
             var_name="property",
             ntypes=ntypes,