diff --git a/mmdeploy/apis/calibration.py b/mmdeploy/apis/calibration.py
index 3aa21f374a..42a72d90a6 100644
--- a/mmdeploy/apis/calibration.py
+++ b/mmdeploy/apis/calibration.py
@@ -62,7 +62,7 @@ def create_calib_input_data(calib_file: str,
         dataset = task_processor.build_dataset(dataset_cfg, dataset_type)
 
         # patch model
-        backend = get_backend(deploy_cfg)
+        backend = get_backend(deploy_cfg).value
         ir = IR.get(get_ir_config(deploy_cfg)['type'])
         patched_model = patch_model(
             model, cfg=deploy_cfg, backend=backend, ir=ir)
diff --git a/mmdeploy/core/rewriters/rewriter_manager.py b/mmdeploy/core/rewriters/rewriter_manager.py
index de3acaffd2..5e84d723d4 100644
--- a/mmdeploy/core/rewriters/rewriter_manager.py
+++ b/mmdeploy/core/rewriters/rewriter_manager.py
@@ -48,7 +48,11 @@ def patch_model(model: nn.Module,
 
     Examples:
         >>> from mmdeploy.core import patch_model
-        >>> patched_model = patch_model(model, cfg=deploy_cfg, backend=backend)
+        >>> from mmdeploy.utils import Backend, IR
+        >>> deploy_cfg = {}
+        >>> backend = Backend.DEFAULT.value
+        >>> ir = IR.ONNX
+        >>> patched_model = patch_model(model, deploy_cfg, backend, ir)
     """
     return MODULE_REWRITER.patch_model(model, cfg, backend, ir, recursive,
                                        **kwargs)