diff --git a/homeassistant/components/lookin/media_player.py b/homeassistant/components/lookin/media_player.py
index 405852e88a6..f7ae457cbff 100644
--- a/homeassistant/components/lookin/media_player.py
+++ b/homeassistant/components/lookin/media_player.py
@@ -79,7 +79,7 @@ class LookinMedia(LookinPowerPushRemoteEntity, MediaPlayerEntity):
         uuid: str,
         device: Remote,
         lookin_data: LookinData,
-        device_class: str,
+        device_class: MediaPlayerDeviceClass,
     ) -> None:
         """Init the lookin media player."""
         self._attr_device_class = device_class
diff --git a/homeassistant/components/media_player/__init__.py b/homeassistant/components/media_player/__init__.py
index 2337990933a..ffe0b4e2813 100644
--- a/homeassistant/components/media_player/__init__.py
+++ b/homeassistant/components/media_player/__init__.py
@@ -453,7 +453,7 @@ async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
 class MediaPlayerEntityDescription(EntityDescription):
     """A class that describes media player entities."""
 
-    device_class: MediaPlayerDeviceClass | str | None = None
+    device_class: MediaPlayerDeviceClass | None = None
 
 
 class MediaPlayerEntity(Entity):
@@ -464,7 +464,7 @@ class MediaPlayerEntity(Entity):
 
     _attr_app_id: str | None = None
     _attr_app_name: str | None = None
-    _attr_device_class: MediaPlayerDeviceClass | str | None
+    _attr_device_class: MediaPlayerDeviceClass | None
     _attr_group_members: list[str] | None = None
     _attr_is_volume_muted: bool | None = None
     _attr_media_album_artist: str | None = None
@@ -497,7 +497,7 @@ class MediaPlayerEntity(Entity):
 
     # Implement these for your media player
     @property
-    def device_class(self) -> MediaPlayerDeviceClass | str | None:
+    def device_class(self) -> MediaPlayerDeviceClass | None:
         """Return the class of this entity."""
         if hasattr(self, "_attr_device_class"):
             return self._attr_device_class
diff --git a/homeassistant/components/roku/media_player.py b/homeassistant/components/roku/media_player.py
index 7b495247c4d..b09ddb7ef7d 100644
--- a/homeassistant/components/roku/media_player.py
+++ b/homeassistant/components/roku/media_player.py
@@ -130,7 +130,7 @@ class RokuMediaPlayer(RokuEntity, MediaPlayerEntity):
         return self.coordinator.data.media.duration > 0
 
     @property
-    def device_class(self) -> str | None:
+    def device_class(self) -> MediaPlayerDeviceClass:
         """Return the class of this device."""
         if self.coordinator.data.info.device_type == "tv":
             return MediaPlayerDeviceClass.TV
diff --git a/homeassistant/components/universal/media_player.py b/homeassistant/components/universal/media_player.py
index 3c6ba701f7d..4f0e17cac9b 100644
--- a/homeassistant/components/universal/media_player.py
+++ b/homeassistant/components/universal/media_player.py
@@ -40,6 +40,7 @@ from homeassistant.components.media_player import (
     SERVICE_PLAY_MEDIA,
     SERVICE_SELECT_SOUND_MODE,
     SERVICE_SELECT_SOURCE,
+    MediaPlayerDeviceClass,
     MediaPlayerEntity,
     MediaPlayerEntityFeature,
     MediaPlayerState,
@@ -279,7 +280,7 @@ class UniversalMediaPlayer(MediaPlayerEntity):
         )
 
     @property
-    def device_class(self) -> str | None:
+    def device_class(self) -> MediaPlayerDeviceClass | None:
         """Return the class of this device."""
         return self._device_class
 
diff --git a/pylint/plugins/hass_enforce_type_hints.py b/pylint/plugins/hass_enforce_type_hints.py
index a418399b450..e159a110334 100644
--- a/pylint/plugins/hass_enforce_type_hints.py
+++ b/pylint/plugins/hass_enforce_type_hints.py
@@ -1649,7 +1649,7 @@ _INHERITANCE_MATCH: dict[str, list[ClassTypeHintMatch]] = {
             matches=[
                 TypeHintMatch(
                     function_name="device_class",
-                    return_type=["MediaPlayerDeviceClass", "str", None],
+                    return_type=["MediaPlayerDeviceClass", None],
                 ),
                 TypeHintMatch(
                     function_name="state",