diff --git a/bot_bde/check.py b/bot_bde/check.py
new file mode 100644
index 0000000..9aa9439
--- /dev/null
+++ b/bot_bde/check.py
@@ -0,0 +1,10 @@
+from discord.ext import commands
+from bot_bde import config
+
+
+class NotOwner(commands.CheckFailure):
+    pass
+
+
+async def is_owner(ctx: commands.Context):
+    return ctx.author.id == config.get("admin_id")
diff --git a/config_exemple.json b/config_exemple.json
index b49a4a0..9d20d7a 100644
--- a/config_exemple.json
+++ b/config_exemple.json
@@ -1 +1 @@
-{"prefix":  "!", "token":  "GOOD_BOT_TOKEN", "admin_id":  "GOOD_USER_ID"}
\ No newline at end of file
+{"prefix":  "!", "token":  "GOOD_BOT_TOKEN", "admin_id":  1234567890}
\ No newline at end of file
diff --git a/extensions/__init__.py b/extensions/__init__.py
index 61f74b9..b8eff8f 100644
--- a/extensions/__init__.py
+++ b/extensions/__init__.py
@@ -2,3 +2,4 @@ from bot_bde import bot
 
 bot.load_extension("extensions.help")
 bot.load_extension("extensions.speak")
+bot.load_extension("extensions.extension")
diff --git a/extensions/extension.py b/extensions/extension.py
new file mode 100644
index 0000000..10da37c
--- /dev/null
+++ b/extensions/extension.py
@@ -0,0 +1,88 @@
+from discord.ext import commands
+from discord.ext.commands.errors import CommandNotFound
+from discord import Embed
+from bot_bde.check import is_owner, NotOwner
+from bot_bde.logger import logger
+
+
+extension_name = "extension"
+logger = logger.getChild(extension_name)
+
+
+class Extension(commands.Cog):
+    def __init__(self, bot: commands.Bot):
+        self.bot = bot
+        self.strict = False
+        self.voice_chan = None
+        self.waiting = []
+        self.lastSpeaker = None
+
+    @commands.group("extension", pass_context=True)
+    @commands.check(is_owner)
+    async def extension(self, ctx: commands.Context):
+        if ctx.invoked_subcommand is None:
+            embed = Embed(title="Extensions")
+            for extension in self.bot.extensions:
+                embed.add_field(name=extension, value="Loaded", inline=False)
+            await ctx.send(embed=embed)
+
+    @extension.group("load", pass_context=True)
+    @commands.check(is_owner)
+    async def extension_load(self, ctx: commands.Context, name: str):
+        try:
+            self.bot.load_extension(name)
+        except Extension as e:
+            await ctx.message.add_reaction("\u26a0")
+        else:
+            await ctx.message.add_reaction("\U0001f44d")
+
+    @extension.group("unload", pass_context=True)
+    @commands.check(is_owner)
+    async def extension_unload(self, ctx: commands.Context, name: str):
+        try:
+            self.bot.unload_extension(name)
+        except Extension as e:
+            await ctx.message.add_reaction("\u26a0")
+        else:
+            await ctx.message.add_reaction("\U0001f44d")
+
+    @extension.group("reload", pass_context=True)
+    @commands.check(is_owner)
+    async def extension_reload(self, ctx: commands.Context, name: str):
+        try:
+            self.bot.unload_extension(name)
+            self.bot.load_extension(name)
+        except Extension as e:
+            await ctx.message.add_reaction("\u26a0")
+        else:
+            await ctx.message.add_reaction("\U0001f44d")
+
+    @commands.Cog.listener()
+    async def on_command_error(self, ctx: commands.Context, error):
+        if isinstance(error, NotOwner):
+            await ctx.message.add_reaction("\u274C")
+        elif isinstance(error, CommandNotFound):
+            await ctx.message.add_reaction("\u2753")
+        else:
+            await ctx.send("An error occurred !")
+            raise error
+
+
+def setup(bot):
+    logger.info(f"Loading...")
+    try:
+        bot.add_cog(Extension(bot))
+    except Exception as e:
+        logger.error(f"Error loading: {e}")
+    else:
+        logger.info(f"Load successful")
+
+
+def teardown(bot):
+    logger.info(f"Unloading...")
+    try:
+        bot.remove_cog("Extension")
+    except Exception as e:
+        logger.error(f"Error unloading: {e}")
+    else:
+        logger.info(f"Unload successful")
diff --git a/extensions/speak.py b/extensions/speak.py
index bac23ec..5e1e332 100644
--- a/extensions/speak.py
+++ b/extensions/speak.py
@@ -1,5 +1,7 @@
 from discord.ext import commands
 from discord import Member, VoiceState, Embed
+from discord.ext.commands import CommandNotFound
+
 from bot_bde.logger import logger
 
 
@@ -134,8 +136,11 @@ class Speak(commands.Cog):
 
     @commands.Cog.listener()
     async def on_command_error(self, ctx: commands.Context, error):
-        await ctx.send("An error occurred !")
-        raise error
+        if isinstance(error, CommandNotFound):
+            await ctx.message.add_reaction("\u2753")
+        else:
+            await ctx.send("An error occurred !")
+            raise error
 
 
 def setup(bot):