diff --git a/homeassistant/components/yamaha/media_player.py b/homeassistant/components/yamaha/media_player.py
index 14affa37aa78..2556cc9a039d 100644
--- a/homeassistant/components/yamaha/media_player.py
+++ b/homeassistant/components/yamaha/media_player.py
@@ -301,7 +301,7 @@ class YamahaDeviceZone(MediaPlayerEntity):
     @property
     def unique_id(self) -> str:
         """Return the unique ID for this media_player."""
-        return self._attr_unique_id or ''
+        return self._attr_unique_id or ""
 
     @property
     def name(self):