diff --git a/README.md b/README.md
index c33d083..415bcc1 100644
--- a/README.md
+++ b/README.md
@@ -183,8 +183,9 @@ Defaults are set in both [`config/defaults.yaml`](config/defaults.yaml) and [`sr
 > ```
 > 
 > ```shell
-> python main.py method=fedprox                                  # fedprox.mu = 1
-> python main.py --config-name your_config method=fedprox        # fedprox.mu = 0.01
+> python main.py method=fedprox                                            # fedprox.mu = 1
+> python main.py --config-name your_config method=fedprox                  # fedprox.mu = 0.01
+> python main.py --config-name your_config method=fedprox fedprox.mu=0.001 # fedprox.mu = 0.001
 > ``` 
 
 ### Monitor 📈
diff --git a/src/utils/tools.py b/src/utils/tools.py
index 7d99c0c..1b73d76 100644
--- a/src/utils/tools.py
+++ b/src/utils/tools.py
@@ -150,8 +150,17 @@ def _merge_configs(defaults: DictConfig, config: DictConfig) -> DictConfig:
 
     final_args = _merge_configs(final_args, config)
 
+    if hasattr(config, method_name):
+        final_args[method_name] = config[method_name]
+
     if get_method_args_func is not None:
-        final_args[method_name] = DictConfig(get_method_args_func([]).__dict__)
+        default_method_args = DictConfig(get_method_args_func([]).__dict__)
+        if hasattr(final_args, method_name):
+            for key in default_method_args.keys():
+                if key not in final_args[method_name].keys():
+                    final_args[method_name][key] = default_method_args[key]
+        else:
+            final_args[method_name] = default_method_args
 
     assert final_args.mode in [
         "serial",