diff --git a/test/model/test_onnx_model.py b/test/model/test_onnx_model.py
index ac943c9c644..56532e3c6dd 100644
--- a/test/model/test_onnx_model.py
+++ b/test/model/test_onnx_model.py
@@ -412,6 +412,7 @@ def test_check_large_model(self):
         import onnx
         import torch
         import torch.nn as nn
+
         from neural_compressor.model.onnx_model import ONNXModel
 
         class Net(nn.Module):
@@ -422,6 +423,7 @@ def __init__(self, in_features, out_features):
             def forward(self, x):
                 x = self.fc(x)
                 return x
+
         # model > 2GB
         model = Net(512, 1024 * 1024)
         input = torch.randn(512, requires_grad=True)