diff --git a/voice_recognition.py b/voice_recognition.py
index 91606b1..a2a7939 100644
--- a/voice_recognition.py
+++ b/voice_recognition.py
@@ -20,7 +20,7 @@ class Events(commands.Cog):
         self.bot = bot
 
     @commands.Cog.listener()
-    async def on_voice_state_update(self, before, after):
+    async def on_voice_state_update(before, after):
         logger.info("before %s", before)
         logger.info("after %s", after)