diff --git a/homeassistant/components/kef/media_player.py b/homeassistant/components/kef/media_player.py
index 14e6e6b406f..d888b30a3b9 100644
--- a/homeassistant/components/kef/media_player.py
+++ b/homeassistant/components/kef/media_player.py
@@ -357,7 +357,7 @@ class KefMediaPlayer(MediaPlayerDevice):
         """Send next track command."""
         await self._speaker.next_track()
 
-    async def update_dsp(self) -> None:
+    async def update_dsp(self, _=None) -> None:
         """Update the DSP settings."""
         if self._speaker_type == "LS50" and self._state == STATE_OFF:
             # The LSX is able to respond when off the LS50 has to be on.