diff --git a/src/lmflow/args.py b/src/lmflow/args.py
index 1f80ece1d..4d6199db4 100644
--- a/src/lmflow/args.py
+++ b/src/lmflow/args.py
@@ -591,7 +591,7 @@ class FinetunerArguments(TrainingArguments):
             "help": "the number of steps in each freezing interval of LISA, i.e. the selected unfreezed layers are randomly switched every {lisa_interval_steps} steps."
         }
     )
-    lisa_layers_attribute: int = field(
+    lisa_layers_attribute: str = field(
         default="model.model.layers",
         metadata={
             "help": "where the layer attribute stores, e.g. model.model.layers"