diff --git a/optimum/onnxruntime/modeling_decoder.py b/optimum/onnxruntime/modeling_decoder.py
index 5afb31637b..ae160d1b34 100644
--- a/optimum/onnxruntime/modeling_decoder.py
+++ b/optimum/onnxruntime/modeling_decoder.py
@@ -161,6 +161,7 @@ def __init__(
                     setattr(self.generation_config, param_name, param_value)
                     setattr(self.config, param_name, None)
 
+        self.model_path = Path(model._model_path)
         self.use_merged = "use_cache_branch" in self.input_names
         self.model_type = self.config.model_type
 
diff --git a/optimum/onnxruntime/optimization.py b/optimum/onnxruntime/optimization.py
index 99b9ab272d..fd6958bba7 100644
--- a/optimum/onnxruntime/optimization.py
+++ b/optimum/onnxruntime/optimization.py
@@ -104,7 +104,7 @@ def from_pretrained(
                     "Please re-export your model. This can be done by using the optimum-cli ONNX export tool or `ORTModelForCausalLM.from_pretrained(..., export=True, use_merged=False)`."
                 )
             else:
-                onnx_model_path.append(model_or_path.model._model_path)
+                onnx_model_path.append(model_or_path.model_path)
             config = model_or_path.config
         elif os.path.isdir(model_or_path):
             from_ortmodel = False