diff --git a/homeassistant/components/hardware/websocket_api.py b/homeassistant/components/hardware/websocket_api.py
index 918c96c5643..d4e4f2fed5c 100644
--- a/homeassistant/components/hardware/websocket_api.py
+++ b/homeassistant/components/hardware/websocket_api.py
@@ -66,13 +66,13 @@ async def ws_info(
     connection.send_result(msg["id"], {"hardware": hardware_info})
 
 
+@callback
 @websocket_api.websocket_command(
     {
         vol.Required("type"): "hardware/subscribe_system_status",
     }
 )
-@websocket_api.async_response
-async def ws_subscribe_system_status(
+def ws_subscribe_system_status(
     hass: HomeAssistant, connection: websocket_api.ActiveConnection, msg: dict[str, Any]
 ) -> None:
     """Subscribe to system status updates."""