diff --git a/onmt/tests/test_inference_engines.py b/onmt/tests/test_inference_engines.py
index b30bb8ee80..c83125ee68 100644
--- a/onmt/tests/test_inference_engines.py
+++ b/onmt/tests/test_inference_engines.py
@@ -9,7 +9,6 @@ def _get_parser():
     parser = ArgumentParser(description="simple_inference_engine_py.py")
     opts.config_opts(parser)
     opts.translate_opts(parser, dynamic=True)
-    opts.model_opts(parser)
     return parser