diff --git a/egs/librispeech/ASR/conv_emformer_transducer_stateless2/export-for-ncnn.py b/egs/librispeech/ASR/conv_emformer_transducer_stateless2/export-for-ncnn.py
index 716de5734..64c16141c 100755
--- a/egs/librispeech/ASR/conv_emformer_transducer_stateless2/export-for-ncnn.py
+++ b/egs/librispeech/ASR/conv_emformer_transducer_stateless2/export-for-ncnn.py
@@ -152,7 +152,6 @@ def export_encoder_model_jit_trace(
 
     x = torch.zeros(1, T, 80, dtype=torch.float32)
     states = encoder_model.init_states()
-    states = encoder_model.init_states()
 
     traced_model = torch.jit.trace(encoder_model, (x, states))
     traced_model.save(encoder_filename)