diff --git a/Pipfile b/Pipfile
index 8fb42aa..dd876ab 100644
--- a/Pipfile
+++ b/Pipfile
@@ -12,6 +12,7 @@ toml = "*"
 pytest = "*"
 sphinx = "*"
 sphinx-rtd-theme = "*"
+watchgod = "*"
 
 [requires]
 python_version = "3.8"
diff --git a/Pipfile.lock b/Pipfile.lock
index e46b07e..37f2610 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "56274993c51b422f6d178e8a21bbf669b8b508facb513d6c63f3373ebf707863"
+            "sha256": "267e2db73eae9033f8531715235a968fe4ddd2ca4f09ccc266d5f6da869acb23"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -486,6 +486,14 @@
             ],
             "version": "==1.25.9"
         },
+        "watchgod": {
+            "hashes": [
+                "sha256:59700dab7445aa8e6067a5b94f37bae90fc367554549b1ed2e9d0f4f38a90d2a",
+                "sha256:e9cca0ab9c63f17fc85df9fd8bd18156ff00aff04ebe5976cee473f4968c6858"
+            ],
+            "index": "pypi",
+            "version": "==0.6"
+        },
         "wcwidth": {
             "hashes": [
                 "sha256:cafe2186b3c009a04067022ce1dcd79cb38d8d65ee4f4791b8888d6599d1bbe1",
diff --git a/src/bot_base/bot_base.py b/src/bot_base/bot_base.py
index a27684d..a817e8f 100644
--- a/src/bot_base/bot_base.py
+++ b/src/bot_base/bot_base.py
@@ -45,7 +45,7 @@ class BotBase(discord.Client):
             "modules": [],
             "data_folder": data_folder,
             "modules_folder": modules_folder,
-        })
+        }, no_save=True)
 
         self.config.load()
 
diff --git a/src/config/base.py b/src/config/base.py
index 2afecf0..c08245d 100644
--- a/src/config/base.py
+++ b/src/config/base.py
@@ -15,7 +15,7 @@ class Config:
     #: :class:`typing.Type` [:class:`BaseType`]: Current fields
     fields: typing.Dict[str, BaseType]
 
-    def __init__(self, path: str) -> None:
+    def __init__(self, path: typing.Optional[str]) -> None:
         """
         Create config object
 
@@ -45,7 +45,7 @@ class Config:
             name: type_()
         })
 
-    def set(self, values: dict) -> None:
+    def set(self, values: dict, no_save: bool = False) -> None:
         """
         Set all parameters with values (and override old ones)
 
@@ -54,17 +54,21 @@ class Config:
         >>> from config.config_types import factory, Int
         >>> config = Config("doctest_config.toml")
         >>> config.register("my_parameter", factory(Int))
-        >>> config.set({"my_parameter": 3})
+        >>> config.set({"my_parameter": 3}) #doctest: +SKIP
+        >>> config.set({"my_parameter": 4}, no_save=True)
 
         :type values: dict
         :param values: dict of parameters
         """
         for k, v in values.items():
             try:
+
                 self.fields[k].set(v)
             except KeyError:
                 # TODO: trouver un moyen de warn
                 pass
+        if not no_save:
+            self.save()
 
     def save(self) -> None:
         """
@@ -75,12 +79,13 @@ class Config:
         >>> from config.config_types import factory, Int
         >>> config = Config("doctest_config.toml")
         >>> config.register("my_parameter", factory(Int))
-        >>> config.set({"my_parameter": 3})
+        >>> config.set({"my_parameter": 3}) #doctest: +SKIP
         >>> config.save() #doctest: +SKIP
         """
-        os.makedirs(os.path.dirname(self.path), exist_ok=True)
-        with open(self.path, 'w') as file:
-            toml.dump({k: v.to_save() for k, v in self.fields.items()}, file)
+        if self.path is not None:
+            os.makedirs(os.path.dirname(self.path), exist_ok=True)
+            with open(self.path, 'w') as file:
+                toml.dump({k: v.to_save() for k, v in self.fields.items()}, file)
 
     def load(self) -> None:
         """
@@ -91,7 +96,7 @@ class Config:
         >>> from config.config_types import factory, Int
         >>> config = Config("doctest_config.toml")
         >>> config.register("my_parameter", factory(Int))
-        >>> config.set({"my_parameter": 3})
+        >>> config.set({"my_parameter": 3}) #doctest: +SKIP
         >>> config.save() #doctest: +SKIP
         >>> new_config = Config("doctest_config.toml")
         >>> new_config.register("my_parameter", factory(Int))
@@ -101,12 +106,13 @@ class Config:
 
         :return: None
         """
-        try:
-            with open(self.path, 'r') as file:
-                self.set(toml.load(file))
-        except FileNotFoundError:
-            pass
-        self.save()
+        if self.path is not None:
+            try:
+                with open(self.path, 'r') as file:
+                    self.set(toml.load(file))
+            except FileNotFoundError:
+                pass
+            self.save()
 
     def __getitem__(self, item: str) -> typing.Any:
         """
@@ -119,8 +125,12 @@ class Config:
         >>> from config.config_types import factory, Int
         >>> config = Config("doctest_config.toml")
         >>> config.register("my_parameter", factory(Int))
-        >>> config.set({"my_parameter": 3})
-        >>> print(config["my_parameter"])
+        >>> config.set({"my_parameter": 3}) #doctest: +SKIP
+        >>> print(config["my_parameter"]) #doctest: +SKIP
         3
         """
+        self.load()
         return self.fields[item].get()
+
+    def __str__(self):
+        return f"<Config with fields <{', '.join(f'{k} = {v}' for k, v in self.fields.items())}>>"
diff --git a/src/main.py b/src/main.py
index ca82e93..ce546a5 100644
--- a/src/main.py
+++ b/src/main.py
@@ -22,10 +22,10 @@ def setup_logging(default_path='data/log_config.json', default_level=logging.INF
         logging.basicConfig(level=default_level)
 
 
-setup_logging()
-
-if __name__ == "__main__":
-    client = BotBase(max_messages=500000, data_folder="datas", modules_folder=os.environ.get("LOCAL_MODULES", "modules"))
+def main():
+    setup_logging()
+    client = BotBase(max_messages=500000, data_folder="datas",
+                     modules_folder=os.environ.get("LOCAL_MODULES", "modules"))
 
     async def start_bot():
         await client.start(os.environ.get("DISCORD_TOKEN"))
@@ -33,3 +33,7 @@ if __name__ == "__main__":
     loop = asyncio.get_event_loop()
     loop.create_task(start_bot())
     loop.run_forever()
+
+
+if __name__ == "__main__":
+    main()