diff --git a/homeassistant/components/sonos/binary_sensor.py b/homeassistant/components/sonos/binary_sensor.py
index fbeb196f9fa..b927e970c9b 100644
--- a/homeassistant/components/sonos/binary_sensor.py
+++ b/homeassistant/components/sonos/binary_sensor.py
@@ -11,7 +11,7 @@ from homeassistant.components.binary_sensor import (
 )
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import EntityCategory
-from homeassistant.core import HomeAssistant
+from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.dispatcher import async_dispatcher_connect
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
@@ -32,12 +32,14 @@ async def async_setup_entry(
 ) -> None:
     """Set up Sonos from a config entry."""
 
-    async def _async_create_battery_entity(speaker: SonosSpeaker) -> None:
+    @callback
+    def _async_create_battery_entity(speaker: SonosSpeaker) -> None:
         _LOGGER.debug("Creating battery binary_sensor on %s", speaker.zone_name)
         entity = SonosPowerEntity(speaker)
         async_add_entities([entity])
 
-    async def _async_create_mic_entity(speaker: SonosSpeaker) -> None:
+    @callback
+    def _async_create_mic_entity(speaker: SonosSpeaker) -> None:
         _LOGGER.debug("Creating microphone binary_sensor on %s", speaker.zone_name)
         async_add_entities([SonosMicrophoneSensorEntity(speaker)])