diff --git a/optimum/onnxruntime/modeling_seq2seq.py b/optimum/onnxruntime/modeling_seq2seq.py
index 18f07bd9b1..b8d27b64a1 100644
--- a/optimum/onnxruntime/modeling_seq2seq.py
+++ b/optimum/onnxruntime/modeling_seq2seq.py
@@ -36,7 +36,6 @@
 )
 from transformers.file_utils import add_start_docstrings_to_model_forward
 from transformers.modeling_outputs import BaseModelOutput, Seq2SeqLMOutput
-from transformers.utils import is_torch_fx_proxy
 
 import onnxruntime as ort